What Is the Meaning of the Tire Size Numbers? Facts & FAQs
If you’ve ever taken a close look at your tires, you’ve seen a series of numbers embossed on the tire. While these can seem mysterious, they’re actually used to label a series of specs about the tire, also known as the tire service ratings. So, what do tire numbers mean? Let’s break it down.
What Do Tire Numbers Mean?
The position of the number or letter on the tire determines what is described. For this example, we’ll be going by these numbers on a common tire: P 215/65 R 15 89 H
Tire Service Ratings:
How to Tell if a Tire Will Fit Your Car
If you’re interested in buying differently sized tires, you should first check if they’ll fit your car. The best way to find out if a tire will fit your car is to simply ask a tire professional. They’re trained to size tires for various makes and models of vehicles and will know what types of tires are compatible with your vehicle.
Tire size differences could cause cosmetic body damage or interfere with your car’s suspension or brakes. Differences in the tire speed index or load index can affect how your car rides, your effective top speed, and how much weight your tire can handle.
The letters and numbers on your tires may seem inscrutable and arcane, but they actually refer to various specification ratings about your tire. It’s important to keep these in mind when you have your tires replaced because not all tires are compatible with all vehicles.
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