I just pulled the trigger on a set of five 35x12.50x17 KM2's!

I have a Superchips and wanted to know from the people that have changed/reprogrammed thier speedo for correct MPH. What do you guys set your Superchips on for correct speed?

Thank in advance.

 

You should measure them on the jeep after getting them mounted. Tire height will vary r/t specific vehicle weight, tire pressure, ... so each is different to a certain point. Then set your tuner to that height and verify with a gps.

 

Definitely measure them on vehicle once they are mounted. For my KM2s 33.75 turned out to be the right speedo calibration. I judged this against my GPS and it's pretty accurate. Congrats on the new tires

 

Mine measured at 33.75" with tire pressure at 25 psi

 

That seems to be the general concensus. Since posting this, I have found threads on other forums that say 33.75 is the "magic" number.

I'll set and double check it with GPS. Thanks guys