I have a Predator tuner and have changed my tires to 265's. What numbers did you use to get the speedometer/odometer correct? I have not gotten the numbers correct yet to fix my speedo. What did you use to make it right on? I have a GPS to check my accuracy.

Thanks

Did it re-program after you changed the stock tire size to current tire size. It must do this before it will be correct. I have 285's on and set to that size I am GPS verified to within a 1/2 MPH. (That is as close as I can judge by the analog speedo.)