Back to all

By the Numbers: Tire Replacement at Tuffy Tire & Auto Service Center Grove City in Grove City

March 26, 2018

Ever notice that your tire is covered with writing? It's like some hieroglyphic art form. Of course, Grove City 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 Grove City 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 Grove City 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 Grove City 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 Grove City, 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 Tuffy Tire & Auto Service Center Grove City 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 Grove City 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 Ohio roads. Good vehicle care is informed vehicle care.

Tuffy Tire & Auto Service Center Grove City
2131 Stringtown Road
Grove City, Ohio 43123
614-871-4020
http://www.tuffygrovecity.com

More articles from Tuffy Grove City

A Not-So-Straight Story (Vehicle Pulls to One Side)

September 14, 2025

A vehicle should travel straight down a straight road with the steering wheel centered. But time and travel can take their toll and soon you may find your vehicle pulling to the left or right. Those are not good signs and should be taken care of fairly quickly. One thing that you should note is... More

That Vexing Vapor Venting (Vapor Coming out of Vents)

September 7, 2025

You may have noticed sometimes on a hot and humid day, vapor will come out of your vehicle's vents when you have the air conditioning on. Is that something to be concerned about? Well, it depends. Sometimes that steam or vapor can be caused by water accumulating in the vent system after it has c... More

How Tired Are Your Tires? (Tire replacement)

August 31, 2025

Of the things you think about most, your tires are probably pretty far down the list. Thats understandable because todays tires are engineered to do their job without needing you to pay too much attention to them. But they DO wear out, and worn tires can contribute to skidding in bad weather, not... More