Tire Designations

Tire Size

The following is an example of a typical passenger vehicle tire size.

border=0>

(A) Passenger (PMetric) Tire:

The United States version of a metric tire sizing system.

The letter P as the first character in the tire size means a passenger vehicle tire engineered to standards set by the U.S. Tire and Rim Association.

(B) Tire Width: The threedigit number indicates the tire section width in millimeters from sidewall to sidewall.

(C) Aspect Ratio: A twodigit number that indicates the tire heighttowidth measurements.

For example, if the tire size aspect ratio is 60, as shown in item C of the illustration, it would mean that the tire's sidewall is 60 percent as high as it is wide.

(D) Construction Code: A letter code is used to indicate the type of ply construction in the tire. The letter R means radial ply construction; the letter D means diagonal or bias ply construction; and the letter B means beltedbias ply construction.

(E) Rim Diameter: Diameter of the wheel in inches.

(F) Service Description: These characters represent the load index and speed rating of the tire. The load index represents the load carrying capacity a tire is certified to carry. The speed rating is the maximum speed a tire is certified to carry a load.

    See also:

    Steering Wheel Controls
    Some audio steering wheel controls could differ depending on the vehicle's options. Controls that can be adjusted at the steering wheel may include: SRCE (Source): Press to switch between ...

    SERVICE BRAKE SYSTEM
    This message displays, while the ignition is on, when the brake fluid level is low. The brake system warning light on the instrument panel cluster also comes on. See Brake System Warning Ligh ...

    Engine Compartment Fuse Block
    The Engine Compartment Fuse Block is located in the engine compartment, on the driver side of the vehicle. Lift the cover for access to the fuse/relay block. If the vehicle is a hybrid, see the h ...