By closely examining the tires, you may be able to determine if the tire is wearing properly or if replacement should be considered. Here are five common tire wear patterns you need to be aware of:

What can cause excessive inner or outer wear?

Excessive wear on the inner or outer edge of the tire, known as "toe wear" or, in more extreme cases, as "camber wear," suggests something may be wrong with the wheel alignment, according to Bridgestone. To help fix the problem, you'll likely need to make an appointment with a mechanic.

What can cause center wear?

If the center of the tire is quicker to wear than the edges, then the tire is likely overinflated. Find the proper tire pressure for your vehicle by looking at the sticker typically found in the doorjamb on the driver side or in the owner's manual, according to Edmunds. Adjust the tire pressure accordingly for a smooth, safe ride.

What can cause edge wear?

If the outer edges of the tire wears faster than the center, the tire is likely underinflated, says Popular Mechanics. Follow the tire pressure recommendation on the side of the tire and add air to the tire as needed.

What can cause cupping wear?

A diagonal scalloping on the tire, known as "cupping wear," suggests the suspension may be worn, bent or somehow compromised, says Pep Boys. This is a serious concern, and you'll probably need to make an appointment with a mechanic immediately.

What can cause patchy wear?

Patchy wear implies the tire is out of balance. Have a mechanic spin and rotate your tires, as this can help equalize the wear. The National Highway Traffic Safety Administration suggests having tires spun and rotated every 5,000 miles, but it's a good idea to consult your owner's manual first.