2020 ram 1500 limited

[vanderhorst1994]

Hello!
Im replacing the stock 285/45r22 on my limited with toyo at3 305/45r22
Ive been reading online this will affect my speedometer and maybe cause other lights to come on.
Is this true? Can the dealer or a tire shop make adjustments with obd to match new tire size?

 

[mikeru82]

Yes, your speedometer will read a little over 1 mph (1.3 mph) slower than you are actually traveling at 60 mph. Probably not enough to worry about IMHO. But your dealership can adjust for that. You can probably adjust it yourself with tools like Alpha OBD.

 

[1BADRAMLIMITED]

IT WILL NOT CAUSE CEL'S OR CODE U WILL SEE SPEEDS LOWER THAN WHAT YOU ARE REALLY TRAVELING BUT VERY MINOR NUMBERS.