Back to all

By the Numbers: Tire Replacement at Spartan Tire Brighton in Brighton

July 14, 2019

Ever notice that your tire is covered with writing? It's like some hieroglyphic art form. Of course, Brighton drivers know that it's not just graffiti, but to most of us, it might as well be. Would you like to know what all those codes on your tire mean? It won't lead you to buried treasure, but it could help you make a better tire purchase at your local Brighton tire store.

Prominently featured on your tire is a set of numbers and letters that looks something like this: 225 50 R 16 92 H. The first number is the width of the tire in millimeters, or the width between the sidewalls of the tire when it is fully inflated and not carrying a load. When Brighton drivers replace tires, they need to match this width number, or the tires won't fit properly in the wheel wells.

The 50 is the aspect ratio of the tire, which is measured by taking the height of the sidewalls and dividing it by the tread width. If you drive off-road around the Brighton area, it should have a high aspect ratio. For high performance on the road, you want a lower aspect ratio.

The R simply means this is a radial tire.

The 92 is the load rating index, or in other words, a rating of how much load a tire can safely carry. If you frequently haul heavy loads around Brighton, you will want a tire with a high load rating.

The last letter in our “code” sequence is the speed rating on the tire. Not all tires have this rating. In general, the closer the letter is to the end of the alphabet, the higher the speed rating. In other words, Z is the highest rating and A is the lowest. One exception: H comes between U and V. Why? Your guess is as good as mine.

If you'd just as soon ignore all of the markings on your tire, that's okay. When you need to replace your tires just ask your friendly and knowledgeable Spartan Tire Brighton tire professional for his auto advice on the best tires for you and your vehicle. Replacing tires is a standard part of preventive maintenance for Brighton drivers vehicles. We all have to do it sooner or later. And the better we understand what we're buying, the better our vehicle will perform and the safer we will be on Michigan roads. Good vehicle care is informed vehicle care.

Spartan Tire Brighton
4880 Old U.S. 23
Brighton, Michigan 48114
810-355-4388

Need Service?

Request a Quote

More articles from Spartan Tire Brighton

Motor Oil?The Synthetic Advantage (Synthetic oil vs Conventional)

March 9, 2025

Youve probably already heard that regular oil changes are extremely important for the health of your vehicles engine. Thats sound advice. But what you might not know is when it comes to motor oil, the real thing may not be the best thing for your engine. There are different types of motor oil: ... More

Catalytic Converter Replacement

March 2, 2025

Many of us have become aware of how important it is to keep our planets air clean, and your vehicle has a key component that helps do just that: the catalytic converter. Its in the exhaust system, and its job is to superheat unburned, harmful byproducts in the exhaust, so they dont get spewed ou... More

It's (Not) Complicated (Engine Air Filter)

February 23, 2025

While many components of your vehicle are complex and composed of lots of mechanical and electrical parts, there's one that isn't complicated but still important. It's your engine air filter. (And, we should point out, the engine air filter isn't to be confused with the cabin air filter. The ca... More