What Do the Numbers on Tires Mean?

When you’re filling your tires or ordering new tires from your local San Francisco parts shop, you’ve probably noticed the numbers and letters located around the tire. You may be wondering, “what do tire numbers mean?” These numbers are meant to indicate the size and type of tire, and whether it has a specific performance purpose. Whether you’re shopping for new tires, or just want to learn more about what do the numbers on the tires mean, follow along with this guide at East Bay MINI Authorized Service Center.

Tire Number Meaning Explained

Tires are the only point of contact connecting the driver to the road beneath them in Oakland. Exploring the tire number meaning helps drivers and the East Bay MINI Authorized Service Center service center find the size, load index, speed rating, and type of tire their MINI needs for optimal performance. So, what do tire numbers mean? Let’s explore tire number meaning by deciphering the following example code:

P215/65R15 95H

At first glance, these numbers may seem nonsensical, but each part of the code represents information that helps Livermore drivers identify the type of tire it is.

The first part of the tire number, “P”, stands for “P-Metric tire”. This means that it is meant to be used for passenger vehicles. Another common marker seen is “LT”, which stands for “light truck”, and is intended for light-weight pickup trucks and full-size SUVs. When tires don’t have a letter at the beginning of the code, it is a Euro-Metric tire, or European-style tire, that has a different load capacity.

The number following the “P” is a number that indicates the tire width in millimeters from sidewall to sidewall of the tire. For this example, the width of the tire in our example is “215” millimeters.

Following the forward slash is the number that indicates the tire’s aspect ratio. A tire’s ratio is found when the height of the tire’s cross-section is compared to its width. In this example, the “65” means that the tire has an aspect ratio where the height is equal to 65% of the tire’s width. With a bigger aspect ratio, it means that the sidewalls will be bigger too.

When looking at the tire number meaning, the “R” simply hints towards the tire’s construction. In this case, the “R” represents that it’s a radial.

When considering the tire size, the “15” in our example indicates the size of the wheel from one side to another. It’s meant to tell drivers what tire can fit on this wheel, and in this example, this tire is meant for a 15-inch wheel.

The final section of the tire code, “95H”, shows the load index and speed rating for the tire. In this example, the “95” indicates the maximum carrying capacity that the tire can support when it’s properly inflated. Typically, passenger vehicles range from 75 to 105. The last letter of the code, “H”, represents the speed rating when paired with its load capacity. The speed rating is ranked following the alphabet, A-Z, and in this case, an H-rated tire can reach a top speed of 130 mph with a load capacity of “95”.

Find Expert Tire Service at East Bay MINI Authorized Service Center!

Do you now have a better understanding of what the numbers on tires mean? When you need tire care, you can easily order parts online, or turn to the certified technicians at East Bay MINI Authorized Service Center for expert car care. If you have any more questions about your MINI tires, explore our other tire service tips, or contact us with any questions.

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