How to Read Tire Size

July 18th, 2018 by

measuring tire depth

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If you’re trying to figure out what size tires you need for your vehicle near Council Bluffs, you can stop by our Chevy center at Gregg Young Chevrolet Omaha, use this handy tire size calculator, or take a look at the numbers on the side of your tire. Find out how to read tire size here, and then come by our Omaha service center for a tire rotation or tire change.

What Do the Numbers on Tires Mean?

If you look at the sidewall of your tire, you’ll notice that there’s a sequence of numbers and letters. You may not have given them a second thought before, but they’re actually a secret code that can reveal exactly what kind of tire you’re driving on. Here’s how to break it down:

  • First Letter Set – The code sequence starts out with either the letter “P”, which means the tires are for a passenger vehicle, or “LT”, which means the tires are for a light truck.
  • First 3-Digit Number Sequence – This set of numbers lets you know the width of your tires in millimeters from sidewall to sidewall. It’s separated from the next set of numbers by a slash (/).
  • First 2-Digit Number Sequence – The first two-digit number sequence lets you know the aspect ratio of the tire’s cross-section to the width of the tires.
  • R – The letter “R” following the two-digit sequence means that the layers of the tires run along the tire radially.
  • Second 2-Digit Number Sequence – The second two-digit numbers sequence is the diameter of the wheels when measured from one end to the other. When someone asks, “What size tires to you have?”, this is often the general number they’re looking for.
  • Other Numbers and Letters – In addition to the code sequence above, there may be a number of different other letters and numbers on the tire, which can let you know information about how much of a load the tires can bear, the maximum speed at which the tires can go, the tire identification number, and the Department of Transportation (DOT) symbol.

Where are Tire Shops Near Me in Council Bluffs?

If it’s time to rotate or replace your tires, make the trip to Gregg Young Chevrolet Norwalk, your certified Chevy dealership near Waterloo at 17750 Burt St in Omaha, NE. We also offer a variety of other automotive services, from auto body repairs to oil changes and custom kits. Our service department opens at 7:00 a.m. Monday through Saturday, and you can reach us at 855-973-8042.