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

WESLEY CHAPEL, Fla. — The Tire Industry Association (TIA) has published OTR tire and wheel weight charts covering more than 150 earthmover and industrial/forklift tires and tire/wheel assemblies.

If you look at the side of your vehicle's tires, you'll notice a line of numbers. One of these number sets is the tire load index. Here's what that means.

If your car comes with a spare tire, chances are it's a space-saving "donut" and not a full-size tire. Here are the pros and cons of carrying a full-size spare.

It’s utter rubbish that a space saver saves enough weight to warrant it. My full size spare weighs 7kg more than the space saver. I threw out the saver wheel and carry the full size spare in my Audi ...