At least once a month, inspect your tires closely for signs of uneven wear.

Uneven wear patterns may be caused by improper inflation pressures, misalignment, improper balance or suspension neglect. If not corrected, further tire damage will occur. (See examples below.)

Most likely, the cause can be corrected at your tire dealer or other service facility. If you find a problem and correct it in time, your tires may be able to continue in service.

Certain uneven wear patterns may indicate that the tire has suffered internal structural damage and requires the immediate attention of your tire dealer.

Examples of Uneven Treadwear

uneven uneven

uneven uneven

When the tread is worn down to one-sixteenth of an inch, tires must be replaced. Built-in treadwear indicators, or "wear bars," which look like narrow strips of smooth rubber across the tread, will appear on the tire when that point of wear is reached.

Treadwear Indicators


When you see these wear bars, the tire is worn out and it's time to replace it.

Inspect your tires frequently. Look for any stones, bits of glass, metal or other foreign objects wedged in the tread. These may work deeper into the tire and cause air loss.

If any tire continually needs more air, have it taken off the vehicle and checked to find out why it is leaking. Damage to the tire, wheel or valve may be the problem.

| Motorists Tire Care & Safety Guide |