The 2021 31-Inch Tire Run was hosted by the Sierra Rock Crawlers pitting fullsize rigs against the Rubicon Trail—with nothing but tiny spare tires!

Tire size conversion chart that shows what P-metric tires sizes are to the equivalent imperial flotation size in inches.

Consumer Reports deciphers the cryptic sidewall codes on a typical tire, explaining how to decode tire size, load index, maximum pressure, speed rating, and more.

By matching lower-profile tire sizing to larger-diameter wheel size, speedometer and odometer readings should change only a little, if at all.

We answer the age of questions on understanding tire size ratings, as well as questions regarding Ford Thunderbolt fiberglass doors, reproduction exhaust system, brake fluid comparisons and more ...

Think those numbers on tires don’t matter? They can tell you more than you’d expect. Here’s what every car owner should know.

Certain-size tires fit on certain-size rims, so you need to replace the correct-size tire onto the wheel you have.