How To Find Your Tire Size and Determine Tire Tread Depth

Find Tire Size

Tire Size

Tire sizes are a series of numbers that refer to the tire’s width, aspect ratio and rim size. They are typically found in two places:

  1. On the tire’s sidewall. (See above image for an example)
  2. On a sticker on the inside of the driver’s car door.

You can also search Champtires’ website to find out what tire size(s) fits your vehicle.

Tread Depth

In the U.S., the accepted measurement for tire tread levels are in 32nds of an inch. Tire tread gauges are used to obtained specific measurements. Most passenger tires start out with a tread level of 10/32. States, like Pennsylvania, that have vehicle safety inspections require tires to have certain tread depths to pass. Typically, tire tread above 2/32 of an inch is considered to be adequate. However, some tests have shown that 4/32 is a much safer guideline to follow.

Learn how to use a tire tread gauge.

When tires are worn or nearly bald, the penny test is useful.

Champtires has more than 30,000 premium used tires in stock, and our prices are so low that you’ll save up to 80 percent off the cost of new tires. Every tire that enters our warehouse is inspected and tested, and we offer a 14-day satisfaction guarantee.

Shop for Tires – Shipping is Always Free!

Three Pittsburgh-area Locations

Pittsburgh

1319 Washington Blvd.
Pittsburgh, PA 15206

Hours of Operation
Monday – Friday: 9:00 AM – 6:00 PM EST
Saturday: 9:00 AM – 4:00 PM EST
Sunday: Closed
(412) 361-1696

Services Available: Tire sales; tire installation; wheel alignment; and brake and suspension services

West Mifflin 

1130 Lebanon Rd
West Mifflin, PA 15122

Hours of Operation
Monday – Friday: 9:00 AM – 6:00 PM EST
Saturday: 9:00 AM – 4:00 PM EST
Sunday: Closed
(412) 462-3000

Services Available: Tire sales; tire installation; wheel alignment; and brake and suspension services

North Huntington / Irwin

15091 Rte. 30
North Huntington, PA 15642

Hours of Operation
Monday – Friday: 9:00 AM – 6:00 PM EST
Saturday: 9:00 AM – 4:00 PM EST
Sunday: Closed
(412) 646-1999

Services Available: Tires sales; tire installation; brake and suspension services

Related Information:

Flat Tire? Don’t Stress.

Why Buy Used Tires?

The Dangers of Driving With Worn Tires.