This does everything as advertised. Very happy. I went from tire size 30.5 to 33.9.
My speedometer was off by a graduated rate that I had to calibrate with WAZE to know my actual speed.
With the F5 tuner, I was able to get the speed consistent with the speedometer.
The only drawback... it is in increments of .25. So I had to pick 34 diameter. But, now my mileage is better and I don't need the paper bag with the speedometer reading vs. the actual speed.
This was used with a 2019 Ford F-150 3.0 Powerstroke
Posted by Steve (Morris Plains, NJ) / September 24, 20232019 Ford F-150
