The wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance.
If you notice unusual tire wear or your vehicle pulling one way or the other, the alignment may need to be reset. If you notice your vehicle vibrating when driving on a smooth road, your wheels may need to be rebalanced.
Tire rotation is very important. Tires should be rotated every 6,000 miles.
Every tire has several words that describe it's quality rating.Learn what these Tire Ratings Mean.
The tire size is a combination of letters and numbers used to define a particular tire's width, height, aspect ratio, construction type, and service description. Learn what all those letters and numbers mean in Tire Size Description.
One way to tell when it is time for new tires is to check the tread wear indicators, which will appear when your tires have only 1/16 inch (1.6 mm) or less of tread remaining. Examples
Tires need to be properly inflated at all times. Dont let anyone tell that a little less air pressure or a little more is OK and can give some kinds of advantages over having the correct pressure. Here are some examples of what Improper Inflation (over or under inflation) can do.
When it is time to get new tires, it is very important to get the same style, type, and size as the original. This is even more important with a 4 wheel drive, or all-wheel drive truck or SUV. Learn More Here.
AmericanMuscle provides a great resource with their Tire Size Calculator. The tool allows you to calculate what happens to your car's speedometer when you change your wheel and tire size.