Description:
There are several simple ways to check tire
tread depth. The first way is to measure tread depth with a
tread depth gauge. The second method involves the use of
a penny inserted into the grooves of the tread. Tire
wear
bars are also used on today’s
tires as a hands-off visual indication that a
tire needs replacement.
Purpose: Regular tread depth checks are
important to ensure that your car’s tires are safe. Excessive wear
can result in a loss of traction, especially on wet and slippery
roads. Tires are regular wear items and staying on top of their
condition not only ensures your safety,
but
also gives
you the opportunity
to plan ahead and budget for inevitable tire
replacement.
Maintenance Tips/Suggestions: When using a tread depth gauge, tires need to have at least 1/16-in. of
tread or more (this is the minimum amount of tread
allowed by law). By using a penny as a quick reference, insert the penny into
the tread groove with Lincoln’s face showing, but with his head upside-down.
If you are able to see all of Lincoln’s head, the tire
needs replacement. If you see a wear bar across the width of
the tread while facing it, it’s time to replace the tire. Generally, it’s
best to replace tires in sets of four. If your car’s tires show signs of abnormal
or
unequal wear, have
this looked into by a professional technician. Excessive wear on both
outer edges generally indicates under-inflation. Excessive wear in the center
of the tread generally indicates over-inflation. Cupping or dipping
of certain tread sections may indicate worn suspension parts or a wheel
balance problem. Saw-toothed or feathered tread edges may indicate wheel
misalignment. If your car needs alignment or
suspension work, have it done before you drive off with
a new set of tires. Taking a
“big picture” approach to protecting your tire investment will reap
many rewards for miles to come.
