1993 Honda Civic Owner's Manual - Page 136

Tires Maintenance In addition to proper inflation, correct wheel alignment helps to decrease tire wear. You should get your car's wheel alignment checked every 12 months or 15,000 miles (24,000 km). The tires were properly balanced by the factory. They may need to be rebalanced at some time before they are worn out. Have your dealer check the tires if you feel a consistent vibration while driving. A tire should always be rebalanced if it is removed from the wheel. Make sure the installer balances the wheels when you have new tires installed. This increases riding comfort and tire life. Tire Rotation FRONT INDICATOR LOCATION MARKS TREAD WEAR INDICATORS Your car's tires have wear indicators molded into the tread. When the tread wears down to that point, you will see a 1/2 inch (12.7 mm) wide band running across the tread. This shows there is less than 1/16 inch (1.6 mm) of tread left on the tire. A tire that is this worn gives very little traction on wet roads. You should replace the tire if you can see the tread wear indicator in three or more places around the tire. To help increase tire life and distribute wear more evenly, you should have the tires rotated every 7,500 miles (12,000 km). Move the tires to the positions shown in the chart each time they are rotated. Maintenance