It helps to know how to read tire size on your car. When you know what tires your car needs, you can drive more confidently knowing the vehicle is able to perform at its best. When selecting tires, it’s important also to consider the conditions you drive in often and whether you might need snow tires or specialized tires.

Tire size can be found on the tire itself, but with many numbers and letters found on each tire, what exactly does it all mean? The repair center technicians at Ira Lexus of Danvers have put together this guide so drivers in north Andover, Peabody and Danvers can easily locate tire size and decipher the most important info.


It doesn’t matter what kind of car you’re driving. Finding the manufacturer-approved tire size is quick and easy. You can start by searching in the owner’s manual for information, and it should be found there easily.

However, if you don’t have the owner’s manual on hand, look at the:
● Glove box interior.
● Gas tank hatch.
● Driver’s side door jamb.
If they are the proper manufacturer-recommended tires, finding tire size on the sidewall of the tire itself is easy, as well. This is where drivers can find a lot of information in the form of a long list of numbers and letters. Decoding these numbers and letters allows you to determine tire size.


With tire size, a few tips and tricks can help you decode the information on the tire. Let’s look at some of the available information that can be found.

Letters. Almost every tire has a letter that begins the sequence. If you check the tire and it starts with “P”, it means “P-metric,” which is for the everyday passenger vehicles on the road like coupes, sedans, minivans and SUVs. “LT” stands for “light truck,” which is for cars that carry trailers or heavy cargo loads. If the tire has a “T” on it and nothing else, that means “temporary,” and is a spare tire.
Width. This is the first number on the tire. It’s the width, in millimeters, of the tires that should be on your car. For example, if the sequence begins “P225” it means the tires should be for a passenger vehicle and the width of each tire is 225 millimeters.

Speed rating. The final piece of the tire is the speed rating, which is listed as a single letter. If the tire has the letter “R” on it, that means the tires are rated up to 106 mph, and “S” means they’re rated up to 112 mph. This naturally doesn’t mean you need to rev the car up to those speeds! Always obey all posted speed limits, and understand that a higher speed rating often means increased handling performance instead.


Leave the tire work and research to our experienced tire technicians. We offer tire rotation, balancing and emergency repair services if needed.

Schedule a service appointment online today or check out more of our online HELPFUL TIRE RESOURCES. Don’t forget to ask about our road hazard coverage for tires, too.


At Ira Lexus of Danvers, our factory-trained service professionals know how important the tires on your car are. Now that you know how to read tire size, it will be easy for you to find the right replacement tires. If you are replacing the original tires or just need a rotation, let us service your tires! We’ll have you back on the roads of North Andover, Peabody and Danvers as soon as possible. SCHEDULE YOUR TIRE SERVICE TODAY!