Back to all

By the Numbers: Tire Replacement at Tuffy TIre & Auto Service Center Orland Park in Orland Park

January 31, 2021

Ever notice that your tire is covered with writing? It's like some hieroglyphic art form. Of course, Orland Park 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 Orland Park 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 Orland Park 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 Orland Park 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 Orland Park, 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 Orland Park 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 Orland Park 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 Illinois roads. Good vehicle care is informed vehicle care.

Tuffy TIre & Auto Service Center Orland Park
7900 W. 159th St.
Orland Park, Illinois 60462
708-444-2966

Need Service?

Request a Quote

More articles from Tuffy Orland Park

Bump in the Road (Alignment)

April 26, 2026

There's something you can do that helps your tires last longer, wear more evenly and your vehicle handle better. "Sign me up," you say! Wondering what that is? It's aligning your wheels, and it will literally point you in the right direction when it comes to a better and safer driving experience... More

Automotive Tips from Tuffy TIre & Auto Service Center Orland Park: Serpentine Belt System Wear

April 19, 2026

The primary job of the serpentine belt for Orland Park drivers is to provide important traction to spin the accessories. As the belt wears it loses some of its grip and the accessories may not spin at optimal speeds. For example, if your alternator doesnt spin fast enough, the battery will not co... More

Differential Essential (Differential Fluid Exchange)

April 15, 2026

What's the dif? To an automotive technician, it's the differential, a part of your vehicle that helps direct power from the engine to the wheels. The differential is a gearbox that enables the drive wheels to turn at different speeds (they do that when you turn). Inside the differential is a f... More