Auto Repair in Mint Hill – How to Read Tire Sizes

Have you ever tried reading your tire size? It looks like a jumbled mess, doesnt it? Even though theres a lot to take in, theres actually a pretty useful and interesting meaning behind each and every aspect. To better explain, lets take a look at an example:


P stands forpassenger.” This is the Tire Type. Tires withPon them are designed to go on passenger vehicles usually sedans and some light unibody SUVs. Another thing you may see isLT” (Light Truck) this is usually put on big trucks like F350s and some bodyonframe SUVs.

245 is the Tire Width in millimeters from sidewalltosidewall. This area generally encompasses all of your tires tread. In our example, 245 means 245 millimeters.

55 is the Aspect Ratio. This measures the height of the sidewall from where it meets the rim to the tread. In our example, 55 means the sidewall height is 55% of the tire width (which we said earlier was 245 millimeters.)

R is the Construction. In our example we have aRtire a radial which means the tire layers run radially across the tire. Almost all tires on the road use this structure, but you may also see crossply style tires.

16 is the Wheel Diameter in inches. This is a simple measurement of the size of your wheel (sometimes called a rim) and in our example, the wheel size is 16 inches.

Ken Manchester