To make the most informed decision, though, you must understand how to read tire size when it's time to buy tires. Thankfully, determining the correct tire size for your vehicle is relatively simple. All the information you need is immediately available either in your owner's manual or somewhere on the vehicle itself. Already know how to read tire size numbers? Skip the explanation and find the right Bridgestone tire for your vehicle online or by visiting a Bridgestone tire dealer near you.
While actual, physical measurements like width and diameter are factors in finding the right tire size , there are additional details to consider. Knowing how to read car tire sizes also means understanding terms like load index and speed rating that affect your vehicle's overall capabilities.
No matter what vehicle you drive, finding the manufacturer-recommended tire size should be easy. The best place to start looking is the owner's manual. Don't worry if you can't locate the manual; you may also find a tire fit guide in these locations:. You can also find tire size data on the sidewall of your current tires assuming they're the proper size. However, no matter where you find your tire size, you will have to decipher a sequence of numbers and letters.
Don't worry if it looks confusing at first — every letter and number has a straightforward meaning. Let's break down how to read car tire size. Let's take a look at what each number or letter stands for, one by one, in the order they appear in your tire size data. The "P" is short for "P-metric," which is a designation by the Tire and Rim Association for a "passenger car" tire type.
If a tire size has no letters at the beginning, this indicates a Euro metric tire. P-Metric and Euro-Metric tires may have different load capacities. The letters "LT," either at the beginning or at the end of the tire size indicate the tire was designed for light trucks. Vehicle manufacturers equip some light trucks with "LT" type tires. These tires generally require higher inflation pressures than passenger tires.
Consult your owner's manual or tire placard for the recommended tire size and inflation pressure for your vehicle. Department of Transportation to provide consumers with information to help them purchase tires based on their relative treadwear, traction and temperature capabilities.
Traction grades indicate the wet traction of a tire under a controlled test. A tire with an "AA" rating offers outstanding traction in wet conditions. Temperature grades indicate the ability of the tire to withstand and dissipate destructive heat. A tire with a higher temperature grade is able to operate at higher speeds.
Treadwear grades are based on standardized government tests to help predict the expected treadwear of a tire. For example, a tire with a treadwear grade of should last twice as long as a tire with a treadwear grade of You are leaving the Goodyear Auto Service website and are being directed to a website run by a company other than Goodyear.
You are leaving the Goodyear Auto Service website and are being directed to a website run by Citigroup, which issues the Goodyear Credit Card. Please enter a new location that is within the highlighted range on the map or choose to visit one of our stores instead. Please note that pricing and services offered may vary by location. Changing your store will clear an appointment in progress. Just Tires just opened in your area. To help save you time and miles, we can send you over to the Just Tires website, where you can find exclusive deals and schedule an appointment online.
Browse our selection of trailer tires by size. Would you like to continue or start a new search? If you change your vehicle or tire size , the tire in your cart will be removed. ST stands for Special Trailer. These tire sizes are meant for trailers, including fifth wheels and other travel trailers, as well as boat and utility trailers. This may also be referred to as the section width. The aspect ratio is indicated on the tire sidewall as a percentage. In this example, the aspect ratio is 65, meaning the sidewall is 65 percent as high as the tire is wide.
To get the sidewall height, take the tire width of mm and convert it to inches 8. This gives you an answer of 5. R is for radial tires, the industry standard for most tires today. They have better road grip, lower rolling resistance for better gas mileage, ride comfort and durability than previous generations of tires. Boat trailer tires Horse trailer tires Camper tires. Check it out. Get the right tires for your car or truck! Nitrogen vs.
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How much weight can they carry? We'll show you how to find out. Tire glossary In an effort to demystify the world of tires, with its confusing terminology, technology, and "tirespeak," we present the TireBuyer Tire Glossary. How tire inflation affects performance Tire pressure may seem like a little thing, but it really does have a significant effect on your vehicle's performance and safety. Email exclusives Sign up and be the first to hear about promotions and more.
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