Wheels and tires – Jaguar XK JJM 18 02 30 701 User Manual

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Wheels and Tires

Tire Markings

P, 1

The P indicates the tire is for passenger
vehicles.

Tire width, 2

This three-digit number gives the width in
millimetres of the tire from sidewall edge
to sidewall edge. In general, the larger the
number, the wider the tire.

Aspect ratio, 3

This two-digit number, known as the
aspect ratio, gives the tire's ratio of height
to width (this is also known as the tire
profile). The lower the number, the shorter
the tire’s sidewall.

R, 4

The R stands for radial. Radial ply
construction of tires has been the industry
standard for the past 20 years.

Wheel diameter, 5

This two-digit number is the wheel or rim
diameter in inches. If you change your
wheel size, you will have to purchase new
tires to match the new wheel diameter.

Load index, 6

This two- or three-digit number is the
tire's load index. It is a measurement of
how much weight each tire can support.

Note: You may not find this information
on all tires because it is not required by
law.

JAG0395N