Posted 9/7/2024 23:27 (#10882130 - in reply to #10881756) Subject: RE: Peterbilt Speedometer Settings
When I changed the speedometer in my truck I started with the numbers in the book and then fine tuned it by driving a known distance (highway markers). It took a few tries to get it where it needed to be. I think the ECM would need some reprogramming if you were changing tire circumference.
Peterbilt Speedometer Settings
