When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
New Member Welcome AreaNew to CF? Stop in and introduce yourself.
This section is not for help threads.
Please introduce yourself here, but go to your model vehicle section to post questions and get answers to them. Thanks! :)
I have a 2021 Chevy 2500 came factory with 275/65/20s gong to change to my spare tire size which is 275/70/18. Any issue with speedometer or anything else. Thanks
ABS, traction control, steering, shifting, speedo/odo, fuel economy, acceleration ... all will be affected.
It's generally recommended to stay within 3% of the OEM size.
You are correct. I miswrote the OEM tire size at 275/60 instead of 275/65. That would make a difference both in speedometer reading and wear and tear on both differentials.