Have you ever taken a good look at your tires? There's a lot of information to process, but every number and letter refers to something vital. What may seem like a lot of gibberish is actually the roadmap to differentiating one tire from another. The sidewall of each tire gives you the basic information you need to find the most reliable wheels for your vehicle. If you aren't completely sure what kind of tires your vehicle requires, you can always ask the tire experts at Woody Folsom Automotive! Below, you can see exactly what each tire identifier means, so you can better understand your car.
The first three numbers in the sequence on the sidewall of your tire will inform you of your tire's width in millimeters.
After the letter "R", you should be able to see a small set of numbers. This is the rim diameter of the tire, and it lets you know what rim diameter the tire was designed for. If that diameter does not match up to the wheels of your vehicle, then you are using the wrong set of tires.
The set of numbers following the rim diameter is the load index of the tire. This number lets you know the maximum weight that each tire is designed to support.

Service Description

This isn't always the case, but you might find a small letter "P" on the side of your tire. This is called a Service Description, and it uses various letters--like "T" for a temporary donut--to show the type of vehicle the tire should match.  

Size Ratio

The number after your tire width explains the height to width ratio, or the aspect ratio. This helpful spec makes it quick and easy to see whether or not your tires should be used for a specific purpose, like a seasonal environment or performance handling.  

Radial Construction

That "R" you see refers to the internal construction of the tire--it means the tire is created with a sturdy interior that wears reliably. Nearly all modern tires will be radial tires, with the exception of some trucks, which will use bias-ply tires.  

Speed Rating

The number right after your load index refers to the max speed of the tires. For example, if your tire reads, "120 H," that means your tires can drive at 120 MPH for an extended period of time and still be considered safe. If you drive for a while at a speed any higher than that, and you risk the integrity of the tire.  

DOT Code

You can use this number to see exactly when your tire was manufactured! Your tires will likely have a DOT code that ends in four numbers. The first two numbers represent the week of the year, and the last two represent the calendar year. Use this as a general guideline for when you should replace your tires.  

Max Air Pressure

Proper air pressure is vital for keeping your tires in top shape. You'll want to make sure your tires are always filled close to the max air pressure marker. Otherwise, you could be risking tire integrity!  

Traction Rating, Temperature Rating, Treadwear Rating

These ratings are on sliding scales, so it's best to ask the experts at Woody Folsom Automotive what you're getting. Don't spend a fortune on the highest rated tires available! Your vehicle probably doesn't need performance tires, unless it's a luxury or sports car. You'll do just fine with a tire that meets your basic needs.  

Visit Woody Folsom Automotive in Baxley, GA, for more information about tire ratings!

Have questions about your tires? Not to worry! Our auto experts are ready to help you find the tire that perfectly fits your vehicle to a T. You won't find reliable service like this anywhere else in Baxley!