Juice w/attitude and speedometer calibration

[DieselFiend]

Hey fellas, I was hoping you could help me out with this one. I just put 305/55/R20 on my truck and I've got a Juice w/attitude. Since my tire size isn't one of the standard sizes, I had to measure the distance of one revolution by marking the tire and the ground then measuring. So I got my measurement, converted it to metric then put it into the attitude. Problem is, now matter what I put into the attitude, the speedo still reads the same on the monitor. I contacted edge and got no where with them. Suprising because they are usually pretty good about it. Does anyone have any ideas??

 

[ThomasCook]

I had my speedo done at the dealership before I put on the Edge J/A. I don't know whether the attitude can adjust the speedo. I do know that the transmission slip measurement does not work if the speedo has been recalibrated by the dealer. It may be the setting in the attitude is only for slip calculations.