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 ...

So recently, I replaced my 2006 Honda S2000 with a 2007 Honda S2000. My new S2K did not come with stock rubber, and the rear tires are 5% larger than stock. The rear stock tires are 245/40ZR17, and ...

Road Safety Support (RSS) has developed a new method for calibrating digital speedometers, resolving an issue affecting police forces across the country. Historic methods of speedometer calibration do ...

If you've ever performed any kind of driveline or wheel and tire swap, you're probably familiar with speedometer calibration. By stepping up to larger tires and/or wheels, the speedometer reads slow ...