Tire

A tire is a rubber, either solid or inflated, item that surrounds a wheel in order to improve the function. They assist in traction, steering, and braking.

Table of Contents

• 1. Tire Codes

Tire Codes

Tires have an alphanumeric code that describes various attributes of the tire such as vehicle type, diameter of the wheel, and tire section width(measured across the tread in millimeters).

An example of a tire code is P245/50ZR-16.

P is Passenger

245 is the tire section width (245mm).

50 is the aspect ratio(the sidewall height is 50% of its width).

Z is the speed rating(149+mph).

R is the tire type (radial).

16 is the diameter of the wheel.