You’ll need to know what size tires are appropriate for your car if you’ve decided it’s time to buy tires. It’s important to understand how to find tire size and how tire sizing works if you want to make sure your current tire or a replacement tire you’re considering fits your vehicle’s needs.
You may not have given the string of numbers and letters on each tire much thought, but it’s a gold mine of information.
Let’s read the article before you look for “find discount tire”.
Where Can I Find Out What Size Tire I Have?
Your vehicle’s and wheels’ tire sizes can be found in two places:
- Inside the frame of the driver’s side door
- The sidewall of your tire
Example of Tire Size: 255/55 R18 XL
What Does the Size of My Tires Imply?
- The width of a tire is measured in millimeters from sidewall to sidewall by the first three digits.
- The diameter of a tire with a size of 255/60 R16 is 255 millimeters.
- An aspect ratio is a two-digit number that weighs the tire’s cross-section to its width after the slash mark.
- If the tire size is 255/60 R16, the 60 indicates that the tire’s height is 60% of its width. The larger the aspect ratio, the larger the sidewall of the tire.
- The fabrication of the tire lies somewhere between the Aspect Ratio and the Rim Diameter.
- The “R” stands for Radial, which means the tire’s layers run in straight lines across the tire if the tire size is 255/60 R16.
- If your tires have a “B” instead of an “R,” the “B” stands for bias construction, which means the layers are laid out diagonally across the tire.
- The wheel size (rim diameter) is found after Construction and is measured from one end of the wheel. It tells us the size of the wheel/rim that the tire is expected to fit.
- The 16 indicates that the wheel is 16″ in diameter if the tire size is 255/60 R16.
- Each tire is given a number to support the vehicle’s weight that corresponds to the maximum weight that the tire can support when fully inflated.
- The load rating/index for a 255/60 R16/82S tire is 82, which means the weight in pounds is 1,047lbs.
- A high tire load index number indicates that the tire can carry more weight.
- If you buy a tire with a lower load index than what your truck requires, the tire would not be able to carry the vehicle’s weight.
- The maximum speed capability or limit at which your tire was built to operate is indicated by a Tire Speed Rating.
- Although the tire’s maximum speed capability is indicated by the speed rating, this number does not mean that the tires can be driven safely at that speed, particularly in adverse road conditions.
- If your tire size is 255/60 R16/82S, the “S” denotes that the tire’s maximum speed capacity is 112 mph.