Obd2 change tire size. I entered all the information as.

Obd2 change tire size. 0 (BLE) OBD2 Fault Code Reader OBDII Code Scanner Car Check Engine Light for iOS/Android (see below), and the security cable May 16, 2015 · My tire size was 275/65/20, the other guy was 35/12. Jscan was reporting that my tire size was 32. No ABS. Both adjustments are a great improvement!!! To set the May 29, 2023 · Last weekend I changed out the stock tires on my Sahara (P255/70/R18) to some Falken Wildpeaks LT275/70/R18. May 8, 2007 · I see this being asked alot, so I thought I'd make a post that describes why changing to a larger size of tire also changes your speedometer and odometer readings. You will need a security bypass module, I used Kaodtech bypass harness (https://www. 2K subscribers 52 Nov 22, 2018 · When changing your tire size, you need to fine-tune your programmed tire size so that your car will match with your particular tires. Jul 19, 2018 · I took the truck to the dealer and asked them to reprogram the speedo to which they refused as the tire size was not stock. After reading every thread I can find on this forum discussing CGSULIT SC530 is the best OBD2 scanner for Chrysler, Jeep and Dodge cummins. I had already installed my 285/70/17 JLUR takeoffs and was expecting to have to tweak the tires size to 31. . This video made it look pretty straight forward. It can read OBD codes, real-time misfire data, fuel trims, PID data, program keys and TPMS, perform ABS bleeds, cam/crank relearns, throttle relearns, A/C performance tests Oct 25, 2019 · I had a customer upgrade his tires to 33" on a 2014 Chevrolet Silverado. Then check prices for all available tire sizes. Can I recalibrate my speedometer myself? Yes, with the right tools and knowledge on many models, you can recalibrate your speedometer yourself. Specifically I want to make sure I dont miss anything so the 2719mm number doesn't impact park sense or anything else as I When you put different size tires on your vehicle, your speedometer will no longer read the correct speed. 00 B OBD code scanner (I have the MX+) approx Jul 5, 2013 · Is there a way to correct the speedo when going to oversize tires? Is there an easy way? I'm considering getting a 2014 Silverado 1500 but I'd really like to add bigger tires, so I'm wondering about the speedo/odometer. How to change tire size to correct speedometer using AlphaOBD If you saw my previous post, I upgraded the tires and wheels on my JGC using a set of the 2019 Wrangler Sahara tires and wheels. I just traded in my 04 duramax on a 21. Of course, they could not do it. Running the android variant of alpha May 3, 2023 · Looking for diagnostic scan tool recommendations for your Jeep? Here are a few options discussed in the forum: * **Foxwell Elite NT510:** This bidirectional scan tool is mentioned as a capable option for around $199. Value = (your new tire circumference in MM (calculator Simple video showing how I adjusted my tire size with AlfaOBD. Increasing or reducing tire size, gear ratio modifications, sensor problems, and transmission faults are common causes for a speedometer to be out. Feb 13, 2021 · So I have a 2019 Rebel and was using Alpha OBD software via my laptop with windows software, an ECRI security bypass, and an OBDLink EX adapter. Anyone know a fix Nov 14, 2024 · Did your vehicle's Check Engine light just pop on? An OBD-II scanner can point you in the right direction—and potentially save you a bundle. The speedo is 2mph higher than it should be. ! Feb 1, 2020 · Adjust the Settings – Use flash lights to indicate tire pressure while filling, activate and cycle through camera inputs, change tire size, enable/disable TPMS system, display vacuum/boost gauge, cool down mode, winch mode, rock crawl and so much more. SC530, the best OBD2 scanner for Nissan/Infinity,supports25+ reset services,bi-directional test and 10 modes OBD2 functions. I used the tire size calculator in the Alfaobd thread on the other Ram Forum and came up with the correct number to enterand it worked! Hope this helps! Sep 18, 2024 · Innova SDS50 SDS-Tech: Tire Size Reset Purpose To guide users on how to perform the Tire Size Reset function while using the Innova SDS50 SDS-Tech Tablet Scan Tool. These are our featured OBD2 adapters that work flawlessly with FORScan. Did all the steps to change size but when following this the start on abs initialization is shadowed and doesn’t let me select it. Introduction The Tire Size Reset function is a feature found in modern vehicles that allows users to reset or reconfigure the tire size settings within the vehicle's onboard computer system. Here’s how to do it using the Ford As-Built Tire Calculator and FORScan. Need Nov 9, 2018 · So reading the last couple pages for changing tire sizes it seems like there are some issues currently? What are the current steps for Alpha? i have version 2. Avoid Oct 3, 2018 · Isn't the tire size an ABS module special function? Why would re-programming the PCM change the contents of the ABS module? I doubt the dealership tech will re-program the ABS module for the hell of it. A. At the forefront of this revolution lies OBD2 (On-Board Diagnostics) interface, a powerful tool that allows us to understand our vehicles like never before. For example; gear ratio for my 5. Get accurate readings and improve performance with ease. 5 R20 Falken Wildpeak AT3Ws! This means my speedometer was showing a lower speed than I was actually going. Said only time they manually adjust is w 40 inch tires. 75" to get my speedo to be accurate from 5-90mph. Upgrade your ride today! Oct 3, 2022 · Hey everyone, Wondering if anyone else is running into this issue. I did not reset or relearn the PCM or TCM. I attempted to program the tire size with ALFA obd and it took the size but am having issues with the ABS Initialization procedure. Is it possible that if you change the settings, you may not need to do all the abs stuff? Apr 6, 2020 · Just put some 35 inch Ridge grapplers on the 19 bighorn. Feb 11, 2020 · When I entered the circumference for my new tire size, I used the actual measured size from the manufacturer. This thread is to share known MM conversions that correctly adjust the speedometer to accurate readings. Customer comes to pick it up and comes inside and says his check engi Clutch adaption, Windows/door, Turbo, Transmission Learn, Language change, CVT, GEAR Learning, TPMS Service, A/F Adjust, Seat Match, Odometer, Prime Fuel Pump, Headlamp reset, EVAP test, Change Tire size, Tcmoil and etc. I have a set of 245/65 R17 Cooper Discoverer AT tires sitting in my garage to swap for the stock 225s. 6 to a 32. It allows you to adjust tire size and offers many more features compared to alternatives like the AEV Procal or 💡The Innova 7111Bidirectional Scan Tool Tablet offers professional-level functionality for helping reset the tire size information in the vehicle's onboard computer after replacing the tires Oct 27, 2022 · Hi All, hoping for some insight on speedometer calibration after installing aftermarket tires. 105,000 mi. There are two sets of features – those that program the vehicle to accommodate modifications made to the Jeep (or tweak settings), and the “live” features that run only when the Tazer Feb 4, 2023 · You also need this but for $50 total to change what I did and my tire size when I get new tires it’s a deal but you have a 2019 I think 2017 and up need a security bypass cable too which I think are about $20 Aug 2, 2000 · Changing Tire Size With FORScan: In order for the speedometer to read correctly you need to change the tire size programmed into the Ranger. , and provide 25+ special reset services. It must be a glitch with the predetermined sizes. We suggest you to use our LAUNCH X431 V PRO (ASIN:B01GRN4BRQ) car obd2 scanner, It is a FULL System car scan tool and it support calibrate the speedometer for a change in tire size. 7 Hemi Trailhawk is 3. and also provides all-systems diagnostics, over 4,000 active tests, and 36 Dec 22, 2013 · Leave the tire circumference stock and change the gear ratio to make up the difference in tire size. Mar 24, 2023 · I want one that doesn't use the SGW and doesn't reside permanently in the OBD. For example, if your vehicle uses E85 Nov 17, 2016 · 2009 - 2014 Ford F150 - Tire Size Re-Program? - What's the cheapest way to reprogram or recalibrate for larger tire sizes? Hypertech makes a Speedometer Calibrator - Part #742501 that is around $229 Anything else? In other news I really recommend my VEEPEAK OBD scanner if you're looking at an app like Jscan or you just want to read your trouble codes and check engine light codes. Programed the tpms and then programmed the tire size with the IDS. It needs to adjust for tire size and defeat the TPMS. with 275/55R20 my speedometer is 3 mph off at 60 mph. Now got all kinds of warning lights and elevated stress levels. Mar 26, 2007 · Maybe they anticipated the tire size change by customers. 75" or 32" with the jscan. For example - I have 37" tires, but they actually measure 36. I have both Apps now. Dec 4, 2020 · Procedure = "Car Configuration Change" (near bottom of list) Option = "VehConfig 4: Dynamic Tire Circumference (All or Rear) (0-65534mm)" Note: Alternatively you could just do Procedure = "Program Tire Size" and select from a list of tires/sizes, but this may not get you precise results. OBD2 software gives you access to engine and trouble codes so you can make repairs. I also got her new tires and wheels 35s. I've used the how-to guide on the master AlfaOBD thread. Went from 265/70R17 to 285/70R17. Showing how to program the tire size and gear ratio on a dodge ram 1500 pickup truck using the Autel scanner. Feb 11, 2019 · • Change tail light function to euro (amber blinker) • Change Tire Size • Update Tire Pressure (TPMS) thresholds • Enable factory rear fog lights • Disable active noise cancelling (for those adding an aftermarket sub) • Roll front windows down with the key fob • Change access to SRT / off road pages • Enable paddle shifters Aug 10, 2023 · Was at the dealer for a quick OC and TR so figured I'd ask if they could change my tire size to get my speedo dialed in. Note: For FORScan coding modifications, we recommend using the OBD2 USB adapter for it provides a more stable connection. 0. I have the cable and OBD2 BT reader so I'm ready to go. Isnt this just a reader? To change tire size you either need a programmer or need dealer to do it via an MVP contract (tire size) purchase. I used a real GPS and a phone to check the ODOMETER - don't go by the speedometer. I entered all the information as Nov 14, 2022 · 2017 - 2022 Super Duty - Forscan Tire Size Change Causes Wrench/CEL Lights - Seeing as we have winter weather incoming, I took off my BAP 20 Wheels and threw on the 17 steelies with studded Duratracs, they were roughly 1 shorter and 5% off. I have a couple of questions: Do you leave the Scan Tool always connected on the OBD port? May 14, 2021 · Ideally, I would like to hear from people who have done this recently using the JScan app. If your tire size is not one of them then you have to put the tire circumference in mm. With this you don't need download any software, figure out confusing settings or purchase additional tools. When I select procedure it is "greyed" out unable to Dec 22, 2021 · I put 37" cooper discover pros on and used alfaobd to adjust to the new size. Dec 9, 2020 · Has anyone successfully changed tire size in bcm with alpha? im looking at 35s but i want all calculations correct. I went to change the tire size on my buddy's 2015 Sport and followed everything to the T, looked up his tire size and all to get the correct mm size, etc. I made changes to the tire size and to the DRLs to low beam and sidelights instead of high beam DRLs; the next day my car had an engine Oct 11, 2024 · What device are you using, what exact tire size are you entering, does your truck have park assist, what is the fault code, and what module is reporting the vehicle line mismatch fault after the tire size change. Mar 21, 2023 · Tire size and speedometer accuracy are directly linked to each other. I've done it 3 times now and it never changes the size in the computer, and my speedometer is still off. Mar 9, 2021 · Just put a slightly larger tire on my 1500 BTS edition and speedo is off by as much as 5 mph. I have 35" tires and had to input the mm equivalent of 33. Final step - Using JScan to Change Tyre Size Here is an easy-to-understand Jul 10, 2019 · This thread discusses how to program tire size and pressure settings in JK vehicle ECUs (Electronic Control Units) via OBDII without a commercial programmer. Say goodbye to manual calculations, this tool does it all! #Obd2 #TireSizeProgrammer In this video I discuss how to change your upgraded tire's diameter using JSCAN so that your shift points, speedometer and gas mileage are correct. I just purchased the JScan license (for the app), a Vgate iCar Pro Bluetooth 4. 24K subscribers 11 Jan 19, 2022 · Changing the tire size took 5 minutes because I was reading all the info things and making sure I was selecting the right thing. net, Does anyone know of an OBD II scanning tool that can not only scan for codes, but also edit some of the parameters such as tire size and maybe some other things (I don't know which ones yet). I TIMESTAMPS0:00 - Program Tire Size on a Jeep Wrangler JK 20130:19 - Enter Tire Size (typically 1" less than sidewall)0:27 - Tap Write Programming and Confirm Nov 9, 2018 · I’m going to let it think I have a semi tires and just change the mm and hope for the best. net/how-to-change-tire-size/ Buy a compatible OBD adapter, buy the SGW bypass cable, and download the app. After making the change, verify your speedometer accuracy using a GPS app and fine-tune the tire diameter in JSCAN until the speedometer reading matches the GPS. Jan 31, 2016 · Next I played with tire size adjustment. Mar 7, 2021 · I have been advised by my superchargr guy to reprogram my ecm after changing tire size from 265/70 r 16 tp 255/55 r 20. CGSULIT SC880 OBD2 Scanner offers 25+ essential diagnostic functions for 98% of vehicles, including Crankshaft relearn, ABS Bleeding, Airbag light reset,EPB reset, and more for complete car care. Nov 22, 2021 · So I am new to Jeeps and just got a 2018 Wrangler for my wife. the procedures are shown in the procedure thread. First, plug the DRB III into the OBD2 port. You can view a whole heap of sensors in that. Links Below: How To correct Odometer & Speedometer when you increase / decrease the size (diameter) of your tires. 94 miles on the odometer display. 09:1. By understanding the differences in OBD versus OBD II and the different code Aug 26, 2024 · Discover what an OBD2 scanner is and how to use it to diagnose and fix car problems before they escalate into major repairs. To make a correction, the very first thing that has to be done is setting the "Use VID" parameter to disabled. To keep a long story short, after many attempts at it I went an pulled my Oct 24, 2020 · All, I've been doing some searching but not having the luck I was hoping I'm looking for step by step instructions for AlfaObd to change the tire size on a 5th Gen RAM. I know Ford offers 235s as a stock option and the on board computer can be set to that size. Mar 18, 2024 · Ford ForScan OBD2 Speedo Recalibration Tutorial the lonely overlander 2. 2006 and 2004's respectively. Once done back out to main page. he took it to the dealer who added a sales code to the BCM for a larger tire size. Any help appreciated May 9, 2024 · Looking to upgrade your vehicle's tire size? Look no further than the OBD2 Tire Size Programmer. This adjustment can correct speedometer errors and resolve shift issues related to the tire size change. When I select procedure it is "greyed" out unable to May 14, 2025 · Note: If your vehicle is OBD-II compliant, it is supported by the OBDLink app. Simply plug Hypertech's Speedometer Calibrator into the vehicle's under-dash connector, select the new tire height and/or new rear gear ratio, and in a matter of minutes, the vehicle's computer is reprogrammed for accurate readings (as Jan 14, 2023 · When changing tire sizes using JSCAN, especially to 315/70r17, the primary adjustment needed is the tire diameter setting. Popular with nissan owners. The speedometer was dead on with my gps, and the car did not throw any codes, drove great and cruise control worked without issues. Up-sizing, or installing a taller tire, will lead to a speedometer reading that is slower than your actual speed. 11 Now, I’ll show you how to use the DRB III to make these selections. 5/20 and will need to update the speed and gear ration to finalize. 9. If you visit a mechanic, he will use an Apr 25, 2023 · Onboard diagnostics provide near-universal codes, allowing users to understand what is going wrong in their vehicle. I purchased a programmer for ~$100 IIRC and did it myself. An improperly calibrated odometer can lead to inaccurate speed readings, incorrect mileage tracking, and potential legal issues. Pretty easy and straightforward as you simply plug the programmer into the OBD port under the dash and let it do the magic. Please only share verified numbers. You will also have to reprogram the vehicle computer through an OBD-II scanner or with a speedometer calibrator gadget. This device features Tire Size Reset, ECU Coding, and guided functions for V. and id did just that Aug 5, 2024 · About this item The One and Only TPMS Diagnostic Tablet in the XTOOL Scanner: The XTOOL IP819TP OBD2 scanner combines the functions of the IP819 and TP150, offering Full TPMS capabilities, including programming, relearning, and activation. With the tire change 1 actual mile driven works out to . Tire size corrections are made in the settings menu, vehicle editor, and all the way at the bottom in the table titled "vehicle speed scale factor. 1% shorter). Apr 12, 2022 · Good afternoon. I am looking to buy a new scan tool to do the same on my new truck. Autel MS906TS Using OBD JSCAN to Re-Calibrate Jeep Speedometer After Tire Upgrade Rhyno's Garage 1. Use our tire size calculator to find tire size specs and suggested tire sizes. Change your tire size, TPMS threshold, running light mode, locker operation, axle ratio and more in seconds! Dec 14, 2020 · Tire size calibration, known correct sizes This thread is for adjusting tires sizes using Alfa OBD. Nov 15, 2018 · In order to configure settings with FORScan after changing your tire size, you will need a reliable OBD2 adapter. After completing the above steps under ‘Setting Up FORScan’; Click the ‘Configuration and Programming’ button (3rd button from the bottom in the left column). Oct 12, 2018 · Please don't use the shoutbox for complex questions! For those questions please create a thread in the right subforum. I think it is a glitch with the predetermined tire size but now I know how to circumvent it. 25" lift, I'm now running 37x12. If you've installed bigger (or smaller? Eww) tires on your Ram truck, you've probably noticed the speedometer is off. Sep 12, 2024 · I personally tested the Obd2 Tire Size Programmer and was blown away by its accuracy and ease of use. Dec 7, 2016 · 1997 - 2006 Expedition & Navigator - OBD II /Torque App-tie size speedo adjust ??? - Just got new tires on both my own and wife's Expeditions. (Best way to get your mm number is to measure mounted height and then do your conversion, always round up or down to a whole number. plus I still could not get AlfaODB to work 100% on my 2023. Aug 1, 2022 · a friend of mine has lifted his rene and put on bigger tires. Let's compare the best OBD2 programming software. What is OBD2? OBD2 is your vehicle's built-in self-diagnostic system. Sep 14, 2024 · I also show how to change the tire size, how to use a GPS Speedo to ensure accuracy, and also demonstrate the basics of off-road trailview. Our LAUNCH OBD2 Scanner CRP129E is not support to calibrate the speedometer for a change in tire size. After plugging in the DRB III, select option number 1 – “DRB III Standalone”: Nov 25, 2020 · Just earlier this evening I finally got a new Samsung Galaxy A51 and was able to download the ALFAOBD app to it and adjusted my tire size and was able to set my headlights so that the low beams stayed on when the high beams were activated. It also explains how to determine the "correction factor" which can be used to calculate how many miles you really did travel, or The Launch x431 allows you to Program Custom Tire Sizes, something Snap on and Autel can't do. After you have edited the tire size use a GPS app or Waze to verify your speedometer at higher speeds. You can reprogram a vehicle when changing tire size using an on-board diagnostics system, or OBDII. Jul 31, 2020 · How to change tire size to correct speedometer using AlphaOBD Jump to Latest 45K views 49 replies 22 participants last post by Jnsbanman Feb 28, 2024 E Dec 15, 2020 · This thread is for adjusting tires sizes using Alfa OBD. 5” and the measured size of my new tires was 32. 0 code reader. Just checking if the only setting I need to change is the tire circumference only. The onboard computer, commonly known as Sep 30, 2023 · Tire size calibration, known correct sizes This thread is for adjusting tires sizes using Alfa OBD. 1 tire (yes I am also changing the spare). I used a Diablo sport tuner on my old ride to change tire size when I switched between my chrome summer wheels and my factory aluminum winter wheels. Feb 2, 2017 · A few people have asked me how to correct the reading of their speedometer due to tire size changes. 59K subscribers 98 Mar 14, 2022 · I also changed to a 33" tire (285/70/17) and read in a couple spots on the 14th gen forum that the truck automatically adjusts to different tire size by comparing the OEM programming to the GPS/navigation speed. Mar 5, 2024 · In today’s technologically advanced world, vehicle diagnostics have become an indispensable part of ensuring optimal performance and maintenance. Also verify with a GPS device or your May 24, 2023 · In this article, we’ll dive into understanding the impact of bigger tires on your vehicle’s speedometer, explore different tools for calibrating digital and mechanical speedometers, and even discuss a handy tire size speedometer calculator. With the Carli 3. First go Forscan and download Forscan for your computer: Download FORScan Then sign up for a 2-month free extended license key: Support Request Nov 7, 2018 · Has anyone ever found a tuner, program or method of successfully re-calibrating their WK2 to new tire size ? I have a 2018 JGC Trailhawk Ecodiesel and am upsizing from the stock 30. The Autel gives the standard tire size options that were available for the DR truck series, but the Snap-on goes a step farther and gives each tires circumference in millimeters, which was a huge advantage, so I used the Snap-On to adjust my tire size. :?: Feb 28, 2022 · Why? I changed tire size on mine and that's all I did. In this comprehensive guide, we delve deep into the intricacies of OBD2 interface, […] Jun 12, 2021 · So, the settings I need to use to make my speedometer accurate for my build specs are: Tire Size = P225/75R15 Gear Ratio = 4. Jul 1, 2022 · Do you have any questions about the BlueDriver OBD2 scanner? We cover everything you need to know about this scan tool. This needs to be done if you install aftermarket tires that are larger or smaller than stock, so that Mar 8, 2009 · 1983 - 2012 Ranger & B-Series - change tire size, flash ECU? - '99 Ranger Sport, 3. Dec 25, 2008 · Hello DA. Any suggestions? Thanks Jul 22, 2021 · I’m planning to hook up my SGW cable and OBD module next week to update my tire size settings via JSCAN. After changing the tire size in the BCM, I drove on the interstate for 120 miles. Does any have the steps that are needed in JSCAN to change the ECRI lets you update calibrations on your Jeep Wrangler with an easy to use app. After putting on the larger tires, my speedometer was no longer correct. Don't want to purchase the new tires until I have an understanding on the programmer Changing Tire Size With FORScan: After adding a 3. May 11, 2018 · Simple, plug-in installation – 2 parts: a bypass module plugged in above the OBD2 connector and the Tazer JL itself which plugs into the OBD2 connector. You do exactly what they say and it work perfectly. Oct 23, 2017 · Google Doc with full list of things you can change Tire size (requires pin-more info below) TPMS setting (requires pin) That's right-change the TPMS yourself LED bulbs when your truck came with halogen HID is no problem Keep fog lights on with high beams Add on factory options like backup cameras, heated seats, everything Mirror tilt in reverse Jul 29, 2014 · I just did this basic process. This method accurately gives data needed when using a hand held OBDII tuning How to program tire size into your Chrysler, Dodge,Ram, and More! Correct the speedometer! AlfaOBD colin7761 4. 5”, so I didn’t change the tire size and figured it was actually were it should be now. Thank you in advance! Jan 17, 2021 · So I adjusted my tyre size accordingly and now the speedo is pretty much dead-on. 50 (set circumference at 2714). Forscan forum tire size change instructions. Jan 11, 2016 · Replies 11 Views 547 Jun 18, 2025 Burla Dealer won't change tire size in OBD Rob H 88 Jul 2, 2024 Wheels and Brakes Replies 18 Views 3K Jul 28, 2024 Dec 31, 2011 · Hypertech's Speedometer Calibrator can correct the speedometer for tires up to 54 inches (depending on the application), and/or non-stock rear gear ratios. Check out this article and learn all about on-board diagnostics II. My Favorit May 15, 2024 · I tested the Obd2 Tire Size Programmer and it's a game changer for customizing my vehicle's tire size. He had the 18's on it previously. Get yours now! Feb 27, 2021 · Hello group. OBD2 is a modern diagnostic system that is found in most cars. they told him up front the renegade has no ability to modify tire size and that this code was likely going to do nothing. Said the engine torque curve / Jun 8, 2024 · Awesome work! How did you find the codes you needed to change for it? Were they the same as another model? I followed the procedure in this post. The JScan app, used with a compatible OBD2 Bluetooth adapter (like the Veepeak OBDCheck BLE+), is a highly recommended and affordable option. You've probably encountered OBD2 already: Ever noticed the malfunction indicator light on your dashboard? That is your car telling you there is an issue. Jan 2, 2024 · Need some suggestions from the Forum? Have a new 2024 Ram 2500, Big Horn, 4x4 that I would like to upsize the stock 285/60/20 tires to 35/12. It says you're going 70 MPH? You might Dec 28, 2018 · I tried first with the FORSCAN decoded options but the largest size tire they have decoded is 275/65R20 which is only 34". Feb 4, 2024 · Does anyone know if anyone makes a tuner/tire calibration for the 2023 yet? I heard it may be impossible for the 23s but hoping there is someway to at least recalbrate for my 35's? Dec 15, 2022 · My truck is currently at the rail yard waiting to be delivered to my dealer. Today I tried to adjust my tire size to 295/70r18 which comes out to 2733mm in the input of changing the tire size. Trying to change my tire size on Alfa obd on 16 2500 diesel. 54". Jan 25, 2020 · Both are dongle/app combos and the Vgate allows us to change things in our Jeep like gear ratios to support our re-gearing of both axles, tire size for speedometer calibration, idle speed for winching, and TPMS thresholds for our much larger tires. (For a '22 AT4 1500) I did a slight bump in tire size and make, along with new wheel that made a significant difference in aesthetics and handling without having to lift / level / trim the truck Feb 1, 2022 · 2022 RAM 1500 increased tire size to the Falken Wildpeak AT3W 275 60 20 which are 33. It is a standardized protocol that allows extraction of diagnostic trouble codes (DTCs) and real-time data via the OBD2 connector. Apr 15, 2025 · The stock tires were 275/40/19 and my track tires are 295/30/19 (6. The OBDLink app will display the correct PIDs for your vehicle. How much does it cost to recalibrate a speedometer? Dec 26, 2019 · The video below is a pretty good how-to, and briefly mentioned and shows the drop-down menu of sizes, but I wanted to add that when using that method (to me, the easiest way), just pick a tire size that is closest or exactly your current tire diameter, Google the sizes listed and get actual tire diameters and compare it to what you are running Jul 17, 2024 · View products Correct tire size, check codes and truck perimeters OBD link MX+ Drake’s American Dream 23. 5-inch Skyjacker lift on my 2021 Ford Ranger I needed to change the tire size that’s programmed into the Ranger. Do I need to increase the tire size to lower the speedo and if so is there a formula to calculate by how much I need to change it? Right above start on this page is a text box that allows you to input the tire circumference in mm (do not use decimals, round up or down) or you can use the drop menu to select a preprogrammed size. Larger tires cause the speedometer to show slower speeds than reality, and smaller tires show faster speeds. I've only found info on the 4th gens and seems like there is several other settings that need to be changed like in abs. $24 for a single VIN license and you can go right in and set your tire size yourself. The best tire size calculator. If tire size is not set correctly car may loose some performance, and transmission shifting is incorrect on automatic gearbox. c Mar 13, 2021 · I just got all set up with the obd connector and cable and went in to check/adjust my tire size yesterday. I'd like to do that so Nov 19, 2018 · See video: "AlfaOBD - Change your Tire Size to Correct Your Speedo on your RAM!!" Click to expand I got the jscan app it was alot easier for me to change the tire size. The odometer is the only way to really get it right. Also verify with a GPS device or your How to: Change Tire Size This option allows you modify the programmed Tire Height. 2K subscribers Subscribed Feb 17, 2020 · Been trying to change my tire size on my 17 1500. 1 inch (2642 mm spec), as compared to the 31 inch Dueler HL Alenza stock tires (2462 spec). 7K subscribers 25 Dec 25, 2022 · The application allows for various parameter's to be viewed real time (to include boost), and also allows you to alter the speed (in the app) to compensate for a larger tire. I took the current size from the BdyCM 2631 (mm) and dropped it by 5% to Jun 12, 2023 · The other thing that JScan does which is nice is after you change the tire size the you only have one step to clear all the the ABS flashing crap. Is this true? Does a relatively small change in tire size (32" to 33") require Forscan or tuner reprogramming? My speedo seems very accurate when driving by radar speed signs/trailers Mar 9, 2021 · Has anyone used a code scanner or app to change the tire sizes and DRLs on a Patriot? I am using the JScan phone app and Vgate Icar Pro BLE 4. The icon on the screen literally shows "chg tire sz" but doesn't have a screen to change it. I tested it and it's the perfect tool for adjusting your tire size with ease. Important tip! Oct 26, 2018 · From the drop menu select "Program tire size" Right above start on this page is a text box that allows you to input the tire circumference in mm or you can use the drop menu to select a preprogrammed size. My needs are simple; no extra bells/whistles required. G. I made a small change to a larger tire size to a 33-inch tire, 275/60/R20 from the factory size 275/55/R60. Just get yourself a Bluetooth OBD reader and download that app. However, if the new tires differ in size from the originals, it can affect your vehicle’s odometer reading. The size the manufacturer list or the size a tire calculator says isn't the true height of the tire. Therefore, calibrating your odometer after Jul 10, 2020 · Im confused. 737mechanic 28. If the make or model is not listed, type your vehicle information in the 4 VEHICLE BUILD fields. My speedometer is off now (as I expected) and my question is this: is it possible - without going to the dealer - to somehow reflash the PCM or recalibrate the speedo to match the new tire size? Maybe a OBD2 scan tool dongle or something? Thanks in advance. Apr 12, 2024 · Here's a quick and simple way to make the computer adjustments, The OBDGenie 'Tire Size Change Programmer'. Went to the dealer to have them input the correct tire size and was told the truck automatically senses tire size and auto adjusts speedo. Note: Please notice that the vehicle's special functions & vehicle compatibility will vary in different years & models. I didnt feel like messing around with Alfa obd for tire size. Process basics: 1 Obtain the following items: A Security Bypass Cable (Amazon has several) any of the red cables should work I have one very similar approx $20. Nov 29, 2021 · Just upgraded the stock size tires today on my 2015 EX-L; put on BF Goodrich Trail Terrains in 265/60/18. I show in this video how you can change your tire size in your Body Computer on your Ram 1500. You can fix this with Alfa OBD which is Mar 23, 2021 · I think JScan is the cheapest option available: http://jscan. My dealer also indicated that the slight difference between the two tires would not affect any computer information,ABS ECU etc,and would not void any warranty's. No big deal, ran it outside and parked it. Fuel economy You can fine-tune settings in the Vehicle Editor to improve the accuracy of fuel economy calculations. After you select the new tire size, there are directions in the information bubble to reset your ABS. So now on to JSCAN. How to: Change Tire Size This option allows you modify the programmed Tire Height. I was able to find the screen that allows me to change the tire pressure setting for the TPMS, but nothing to change the tire size. Any tips? Sep 20, 2014 · We installed a set of OE 20" wheels and tires on a customer's 2012 F-250 yesterday. Important tip! I tested the Obd2 Tire Size Programmer and it's a game changer! Easily program your tire size for optimal performance. kaodtech. Press start and it should take a couple seconds to complete. Jan 27, 2025 · First, calculate the tire circumference difference by comparing your new and old tire sizes to get your speedometer recalibrated for bigger tires. 1. It can diagnose all systems, such as transmission, throttle, engine, etc. Nov 2, 2023 · As for the transmission gear I would recommend to set the parameter properly AKA tire size and gearing, than perform a full reset, I would assume disconnect both battery for 5 minutes, and let it relearn. I was able to correct it using AlphOBD. Also verify with a GPS device or your Jul 10, 2025 · Changing your tires is a routine part of vehicle maintenance that can improve safety, performance, and efficiency. Confirmed via GPS on google maps and "Car Scanner ELM OBD2" app for iOS, an app which the Veepeak instructions also tell you to download. What needs to be done after you go from 15 inch wheels to 17 inch? Nov 11, 2022 · After installing larger tires on a JK Wrangler, you'll likely need a programmer to correct the speedometer, odometer, and shift points. You simply change the size in millimeters on the tire size setting in the BdyCM in Forscan. When larger tires are installed, speedometer will show incorrect values, also fuel consumption will be less accurate. " Feb 4, 2020 · It works, AlfaOBD has preset tire sizes to choose from. 5 and am ready to change my size, but also don't want to brick anything or run into some of these issues, 2018 Ram 3500. Plus a ton of other stuff. I have a 2021 sport s with max tow (came stock with 245/75/17 tires). sjlezm xbgbk kcaex ffwmpi bbsjt eaiw iigrn snsms mpqxbxv ujwtx