The single greatest cause of tire damage is improper inflation. Your tires will lose pressure over time. The result is
unnecessary stress on your tire, early and irregular wear, and poor gas mileage. No matter what brand of tires you
have on your car, they can't deliver their best performance without the right air pressure. Most service stations and
tire dealers make compressed air available for your use. When you inflate your tires, refer to your car owner's manual
for the proper inflation level. You will also find information listed on a placard
in your glovebox or on the doorjamb of your car.

There is an old, reliable trick you can use to check the legally safe depth of your tire tread.
Be sure to inspect your tire at various points. Irregular treadwear may not be readily visible to you.

1. Take a penny and pinch Abe's body between your thumb and forefinger.
2. Put his head into one of the grooves of the tire tread.
3. If part of his head is obscured by the tread, you're driving with the legal amount of tread.
If you can see all of his head, you're ready for a new tire.

Each tire on your car probably supports a different amount of weight. The engine compartment
is usually heavier than the trunk. If you drive alone, there is more weight on the driver's side than the passenger's side.
The list goes on, but the point is that unequal weight causes your tires to wear at different rates. By having your tires
rotated, you can extend their life expectancy. Ideally you should have your dealer rotate your tires every
5,000 to 8,000 miles and even more frequently if you do most of your driving around town or if you own a
front-wheel drive vehicle. Check your car owner's manual for recommendations. There are several patterns
you can use in rotating your tires. Just be sure to ask the dealer which pattern he used and
stick with it as long as you own those tires.

These tires are especially constructed to grip snowy surfaces. Even the rubber is especially
formulated to stay pliable in the cold and give you better traction on icy roads. However, this same construction
makes snow tires noisy and prone to rapid treadwear on dry surfaces. Note: If you normally use high performance tires
on your car, you should be aware that the addition of snow tires will dramatically affect the way your car handles.
If you decide to use snow tires, be sure to place them on all four wheel positions.
Never mix high performance tires with snow tires.

Speed rating passenger tires originated in Europe. The purpose of the speed rating is to match
tire performance of the vehicle. S rating - up to 112 MPH, T rating - up to 118 MPH, H rating - 130 MPH,
V rating - up to 149 MPH, Z rating - over 149 MPH.
Always replace speed rated tires with tires that are equal or greater than the tires you are taking off.

What do those numbers mean? Example: P235/75R15. P indicates passenger tire.
235 is the section width in millimeters. 75 is the Aspect Ratio (height is 75% of width),
R means radial and 15 is the rim diameter in inches.