Remember calculating which speedo drive gear would make your speedometer and odometer read accurately after a gear and tire size change? if you own a new JK wrangler, those days are gone. Now the ...

A recent update to Google Maps has allowed motorists to see the speed they are travelling, similar to the function already offered by the navigation app Waze. With GPS speedometers becoming more ...

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 ...