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Difficulty: Easy
Time Required: varies
Here's How:
- Refer to your owner's manual for the manufacturer's recommended
tire pressure. You might also find this information on a sticker in
the glove box or on the driver's door jamb.
- Use a gauge to check the air pressure in each tire. Add air or
deflate as needed to match the manufacturer's recommendation.
- Look in the grooves between tire tread for raised patches of
rubber, called wear bars. These 2/32-inch tall patches will
help you identify a worn out tire. (In most states 3/32-inch is the
mimimun legal tread depth.)
- If tread is worn to a level where wear bars are flush with the
tread it indicates that tread depth is 2/32-inch or less. Replace worn
tires.
- If your tires do not have wear bars, place a US penny into a
groove between treads, with Lincoln's head down. If the tread is at or
beyond the top of Lincoln's head you have at at least 3/32-inch of
tread left, a satisfactory level.
- Tread should wear evenly. Inspect each tire for unusual tread
wear. A rounded edge on the inside and outside edges of tread could
indicate under-inflation.
- The same wear pattern on front tires of front-wheel drive vehicles
could indicate a need for more frequent tire rotation.
- Excessive wear on the center of a tire's tread could indicate
over-inflation.
- Unusual wear that resembles a chop or stair-step pattern could
indicate worn shocks. Stair-step wear on the inside and outside tread
of front tires on 4x4 vehicles may be normal.
- Excessive wear on the inside or the outside of the tread could
indicate the need for alignment.
- Carefully check each tire for punctures, nails, damage, scuffs,
and weather cracking. Repair or replace as necessary.
Tips:
- Pressure stats printed on sidewalls indicate the maximum
amount of air pressure tires should be inflated with -- not
recommended pressures.
- Check your owner's manual or ask your local tire dealer for tire
rotation recommendations.
What You Need:
- Tire Pressure Gauge
- US Penny
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