Your car once had a rock-steady speedometer needle, but now it’s wandering a bit — or a lot. Maybe it’s not indicating any speed or it’s showing 60 mph and you know that can’t be right. “An easy way ...

Just how the heck do I calibrate the speedometer on my bike? I installed it myself, set the computer for my wheel size, and cycled...I noticed that it detected the distance to my work as slightly ...

Slamming your truck to get it in the weeds on low-pro rubber or jacking it up for big, knobby meats will throw your speedometer out of whack. Most custom-truck builders know this, but few do anything ...

For as long as I can remember, I knew that all cars’ speedometers are 10 percent incorrect from the factory. It is my understanding that the speedometer always reads higher than the car is really ...