Of course, you should always follow legal speed limits on roadways. Tires with higher speed ratings tend to offer increased handling performance. Replacement tires must have the same or higher speed rating to maintain vehicle speed capability. If a vehicle has tires with different speed ratings, the speed rating of the "slowest" tire dictates the vehicle's top speed. Like the load index, the speed rating is not required by law to be listed on all tires.
If your tires do not have the speed rating listed, your owner's manual will have the relevant information for your model's stock tire type. This indicates that the tire has some capacity to handle snow and mud conditions. This indication is common on most radial or "R" type tires. You may notice another set of letters and numbers on your tire's sidewall beginning with "DOT. The first two letters or numbers after DOT refer to the manufacturing plant where the tire was produced and the last four numbers indicate the week and year the tire was made.
The numbers , for instance, indicate that the tire was manufactured during the 43rd week of While it's certainly possible to upgrade your tires' size, it's usually best to stick to your manufacturer-recommended tire size for optimal performance. Increasing the size of your tires may give your car more ground clearance, but it may also affect handling, drivetrain performance and fuel economy.
Keep in mind the changes to key figures mentioned above, such as load index and speed rating, and how they may affect your vehicle's capabilities if you decide to increase tire size.
Once you know how to read the numbers on tires, you can explore tires by size and narrow down your tire options quickly. Compare tire sizes online or visit a Bridgestone tire dealer near you for help. Width What width? Open Chat Options.
This site uses cookies to enhance your user experience. By continuing to browse our website, you agree to use these cookies. For more information on what cookies we use and how to manage these cookies please visit our Privacy policy. Please turn it on so that you can experience the full capabilities of this site. Tire size can be confusing. Some numbers on the sidewall are listed in millimeters while others are inches. Plus, the right size for your car, truck, or trailer can differ depending on where and how you drive.
This is the sizing recommended by the vehicle manufacturer. Next, have a tire professional help you determine a tire size range that will fit your vehicle and driving needs.
P stands for passenger vehicle tire. P-class tires include cars, SUVs, crossovers, minivans and smaller pickup trucks. LT means light truck tire , designed for vehicles that are capable of carrying heavy loads, towing trailers, or for those looking for an extra heavy duty option.
These are often equipped on three-quarter or 1 ton trucks and SUVs. 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. Search by brand, size, category or vehicle to find the right tire at the most affordable price. The Ultimate Tire Resource. Tire Size Calculator. Tire Sizes by Wheel Size 13" 14" 15" 16"
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