How to Read Tire Size Information

Read metric sizes: 205/55R16 91V

Section Width : 205
The width of this tire size is 205mm wide. The first number in a metric tire size is the section width of the tire.

Aspect Ratio : 55
The aspect ratio on this tire size is 55. The sidewall height of a metric tire is 50% of the section width, which is known as the aspect ratio.

Tire Construction : R
The tire size is indicated by the letter R, which stands for radial construction. This construction method is widely used in the tire industry.

Wheel Diameter : 16
The wheel diameter of this tire size is 16 inches. The tire is designed to be mounted on an 16" wheel diameter.

Load Index : 91
The load index of this tire is 91 - 1356 lbs. It indicates the maximum weight the tire can handle. Higher numbers correspond to greater weight capacity.

Speed Rating : V
This tire size has a speed rating of V - 149 mph 240km/h. The letter 'V' indicates the maximum speed the tire can sustain.

Read inch sizes: 33X12.50R15LT C/6

Diameter : 33
The tire size has a diameter of 35 inches. The first number in a high flotation tire size represents the overall diameter.

Section Width : 12.50
The width of this tire size is 12.5 inches. The width of the tire in inches is indicated by the second number in a high flotation tire size.

Tire Construction : R
The tire construction of this tire size is R for radial. This letter is for how the tire is constructed. Radial is the standard construction method for almost all tires.

Wheel Diameter : 15
The wheel diameter of this tire size is 15 inches. This tire is specifically designed for mounting on a 15 inch wheel diameter.

Tire Class : LT
This tire size is classified as 'LT' which designates it as a Light Truck tire.

Load Range : E
Tire load range of this tire size is 'C' which means it has a 10 ply tread. Other load ranges include B: 4 ply, C: 6 ply and D: 8 ply.