While automotive speedometers are typically inaccurate, to a certain degree, GPS is usually more reliable, depending on your ...

A Pontiac's speedometer is as important as any other gauge found within its instrument panel. It was relatively accurate when new, but any deviation from original tire size and/or rear-axle ratio ...

There are many more driven gears available than drive gears. In traditional GM transmissions, typically available TH350 (also fits most manual boxes) driven gear selection ranges from 18 to 25 teeth.

Bear with me while I complain like a little girl whose shoes are too tight. I'm sick of answering the same "Why doesn't my speedometer register correctly since I swapped tire sizes?" question over and ...