35 to 37 Speedometer Calibration

[RaptorDrew]

My '24 is at the dealership and their mod shop getting a series of goodies installed and I had asked that they calibrate my speedometer (since I put 37s on my 801a) while it was there. They just advised that they don't yet have a solution for the '24s. Does anyone know of a new tuning option on the market which provides for this?

(Yes, I have used the Search function and no, I could not locate an updated assessment.)

 

[hanj0208]

Go check out forscan thread. Plenty of information there. I went from 35 to 37 and still haven’t done it yet. It is about 1-2mph difference. No big deal.

 

[Hemmy]

Go check out forscan thread. Plenty of information there. I went from 35 to 37 and still haven’t done it yet. It is about 1-2mph difference. No big deal.

I also went from 35 to 37's. How are you determining your speedometer difference? I am using Waze and at higher speeds on the highway, I am 3 mph off (truck is reading slower than Waze). In town, I am 2 mph off. Is Waze accurate?
I have to do the Forscan, just waiting to do it. I have to take my truck in for some work and don't want changing anything prior to going to screw up my extended warranty.