What Do Tire Numbers Mean?

If you’ve ever checked your tires at home or had to order new tires from your local parts shop, you’ve probably noticed the combination of numbers and letters on the sidewall of different types of tires. So, what do tire numbers mean? The code indicates the size and type of tire it is, and its particular performance purpose. If you’re in need of new tires and need to determine which ones to get, or if you’re simply wondering what do the numbers on tires mean, let Volume Chevrolet teach you. But, first, check out our guide on decoding tire numbers.

Decoding What Tire Numbers Mean

The tire’s code is a series of letters and numbers that help inform you or your local Griffin service center the size, load index, speed rating, and types of tires your vehicle need for maximum performance. The codes tend to look like this:P215/65R15 95H.

Though it may not seem to make any sense, each section of code represents a piece of information to help identify the types of tires they are.The “P” stands for “P-Metric tire,” meaning that it is used for passenger vehicles. If your tires read “LT,” this stands for “light truck,” and the tire is intended for light-weight pickup trucks. If the tire does not have a letter preceding the code, it is a European style tire, or Euro-Metric tire, which have different load capacities.

Following the “P” is the “215” number, which stands for tire width in millimeters from sidewall to sidewall. So in our example, the width of this tire is 215 millimeters. After the forward slash comes the aspect ratio code, indicated in our example by “65.” A tire’s ratio is the height of the tire’s cross-section to its width, so in our example, this tire has an aspect ratio where its height is equal to 65% of the tire’s width. The bigger the aspect ratio, the bigger the sidewalls will be.

The “R” indicates the tire’s construction, with “R” representing that it’s a radial.

“15” indicates the wheel size from one end to the other, which inform us of what tire can fit on this particular wheel. This code tells us that this tire is meant for a 15-inch wheel.

At the end of the code is “95H,” which is the load index and speed rating for the tire. The load index (“95” in this instance) indicates how much weight the tire can support when it’s properly inflated, and can range from 75-105 for passenger vehicles. “H” represents the speed rating, which is how fast the tire can safely go based on its load capacity. This rating is ranked from A-Z, and with our example, a tire with an “H” rating can reach a maximum speed of 130 mph.

Turn to Volume Chevrolet For All Your Maintenance Needs

When the time comes to have your tires rotated, or even replaced, make your way to Volume Chevrolet. Here, we offer service specials as well as parts specials to help you save more on what your vehicle needs to remain running smoothly from Forsyth to Forsyth. Contact us today with any questions about our models, the 2020 Chevy Corvette preview, and more.

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Volume Chevrolet
Volume Chevrolet
450 N. Lee St.
Forsyth, GA, 31029 US
678-359-4109
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Volume Chevrolet 33.045688, -83.942666.