| View single post by mhoward | |||||||||
| Posted: Sat Feb 29th, 2020 09:41 am |
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mhoward Hey look ~ they ~ bounce!  Joined: Sun Oct 22nd, 2017
Location: Evansville, USA
Posts: 2736
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Yes, tire size CAN affect the speedometer accuracy. My "summer" tires are 235 70R 15 and that throws it off by 3-4 MPH. This is based on the GPS MPH compared to the speedometer. Right now, I have my OEM "winter" wheels and tires installed that are 235 75R 15. Speedometer agrees with the GPS. That being said, there IS a way to adjust for different tire sizes using ForScan software and an ELM 327 OBDII connector. Unfortunately, I don't know how to do that, as I don't bother to change it. I think our member Anthony (SheltonFilms) made a post about that once.
____________________ -- Michael 2003 Ranger Edge / Extended Cab / Flareside / 3.0L FLEX / 5r44e Auto / 2WD / 8.8 LS 4:10 / Sonic Blue Pearl So many mods... so little time... |
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