Why tire air pressure is important:
  • Under-inflation increases tread wear on the outer edges, and generates excessive heat, which can age tires faster
  • Fuel economy is reduced as rolling resistance increases — soft tires make your vehicle work harder
  • Too much air pressure causes the center tread to carry most of the car's weight, leading to faster deterioration and uneven wear
To find the proper air pressure for your tires, look in your vehicle's owner's manual, on the sticker on the driver's side doorjamb, or in the glove box.
 
Tire Wear & Tear
 
To help maintain even tread wear and prolong tire life, review this quick reference about alignment, rotation, and visual inspections. For a professional evaluation, find a Tire & Service Network location near you.
Misalignment of the front or rear wheels can cause rapid or uneven wear. Front-wheel-drive vehicles and those with independent rear suspension require alignment of all four wheels, instead of two. Getting your alignment checked as specified in your vehicle's owner's manual is the recommended way to prolong tire life.1
Sometimes irregular tire wear can be corrected by rotating your tires. Consult your vehicle's owner's manual or visit a Tire & Service Network location near you to find the appropriate rotation pattern for your vehicle. If your tires show uneven wear, ask a Goodyear expert to check for and correct any misalignment, imbalance, or other mechanical problem involved before rotation.1
A tire's tread directly affects how it grips the road, so it's important to regularly inspect it visually for signs of uneven wear. These signs can include high or low areas, or unusually smooth ones.1
1"Be Tire Smart," The Rubber Manufacturers Association
Visual Inspection
 
Inspecting your tires can help you find punctures or other visible signs of damage that could necessitate replacement.
Repairs
 
It's crucial to know when it's okay to have a tire repaired and when a tire should be replaced
  • If a tire loses air pressure, it should be removed for an internal inspection.
  • Driving on a flat tire for even a short distance can ruin it
  • Most punctures, nail holes, or cuts up to 1/4 in. (.64 cm) can be repaired if the damage is confined to the tread
  • Do not repair any sidewall or tread punctures larger than 1/4 in. (.64 cm), and NEVER repair tires worn below 1/16 in. (.16 cm)
Wheel Balance and Alignment
 
Having your tires balanced and your vehicle properly aligned is important for tire longevity and vehicle performance.
  • Unbalanced tires cause road vibration, which can lead to driver fatigue, premature tire wear (also known as cupping or dipping), and unnecessary wear to your vehicle's suspension
  • Tires should be balanced whenever they're mounted on wheels
  • They should be rebalanced at the first sign of a vibration or shimmy, and once a year
 
Take The Penny Test
 
Insert a penny into your tire's tread groove with Lincoln's head upside down and facing you. If you can see all of the head, it's time to replace your tires.
Check The Tread Wear Indicator
 
You can also check the tread wear indicator. You can find the tread wear indicator less than an inch (2/32 of an inch) from the bottom of the tread groove. When the tread wears down to become even with this level, the tire should be replaced.
To avoid potential problems, have your tires checked at a Tire & Service Network location near you if you notice any of these common wear patterns:
 
WEAR ON BOTH EDGES: UNDERINFLATION
Under inflation increases the tread wear on a tire's outside edges and generates excessive heat, reducing the tire's toughness. Soft tires also increase rolling resistance, reducing fuel economy.
WEAR IN CENTER: OVERINFLATION
Over inflation increases wear on the center tread.
CUPS OR DIPS IN THE TREAD: WORN PARTS
Cupping or dipping is most common on front tires, but rear tires can cup as well.
SAWTOOTH EDGES: MISALIGNMENT
Misalignment causes erratic scrubbing against the road giving the tire's edges a saw-tooth like appearance.