I just put a set of 35" procomp A/T Extreme tires with 20 " wheels on my truck. Whlie driving on the freeway I notice @ 65 mph I am passing most people. My Evo programmer matches my speedodometer but Im wondering if there off becouse of the tires. Anybody have any experience with this???

 

Did you reprogram the Edge with the larger tire size?

 

If you did not reprogramm your speedometer it is off.

 

I did enter the tire size in the programmer

 

Try using a gps or something like that. It will give you your speed based off the satelites instead of off the computer in the car. The EVO is probably just reading whatever the computer is telling the speedometer

 

x2 on gps