Proper air pressure is one of the most important things you can do to promote tire health. Avoid overinflating or underinflating your tires. You can find the chassis manufacturer’s “recommended” tire pressure on your vehicle’s side door jamb. The pressure stamped on your tire is actually the “maximum” pressure.
Proper pressure is essential to tire durability. The key word here is “proper” — do not overinflate your tires. If you overinflate substantially, you’re simply asking for trouble. Underinflation can be just as bad as overinflation.
Keeping your tire at the proper pressure level ensures a comfortable ride and optimum performance. Use a proper tire gauge to check your tire pressure regularly — at least once a week. Oh, and make sure you’re using a gauge that can read over 100 PSI.
When in doubt, go with the manufacturer recommendation on your tire pressure placard.