got to an auto parts store and buy a tire tread depth gauge for $2 or
$3. measure tread depth along the inside, middle and outside of each
of your 4 tires. if you find the outer edges of the front tires are
1/32 less deep than the inside edges and the rears are even, then
you'll know you need to have your tires rotated. see tirerack links
for some additional info.
If you drive gently, a car like the Civic won't wear tires very
quickly and tire rotations are not needed very often. The harder you
drive, the more quickly the tires, especially the fronts, will wear.
See alignment info below re. tire wear patterns;
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