Tire Size - Hummer H2 2010 Owner's Manual

(F) Tire Ply Material
:
number of plies in the sidewall and under the
tread.
(G) Single Tire Maximum Load
that can be carried and the maximum pressure
needed to support that load when used as a
single. For information on recommended tire
pressure see Inflation - Tire Pressure on page 6 66
and Loading the Vehicle on page 5 40 .

Tire Size

The following illustration shows an example of a
typical passenger vehicle tire size.
Light Truck (LT Metric) Tire
(A) Light Truck (LT Metric) Tire
States version of a metric tire sizing system. The
letters LT as the first two characters in the tire size
means a light truck tire engineered to standards
set by the U.S. Tire and Rim Association.
6-62
The type of cord and
Maximum load
:
The United
:
(B) Tire Width The three digit number indicates
:
the tire section width in millimeters from sidewall
to sidewall.
(C) Aspect Ratio A two digit number that
:
indicates the tire height to width measurements.
For example, if the tire size aspect ratio is 75, as
shown in item C of the light truck (LT Metric) tire
illustration, it would mean that the tire's sidewall is
75 percent as high as it is wide.
(D) Construction Code
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 belted bias ply
construction.
(E) Rim Diameter Diameter of the wheel in
:
inches.
(F) Load Range Load Range.
:
(G) Service Description
indicates the load index and speed rating of a tire.
If two numbers are given as in the example,
120/116, then this represents the load index for
single versus dual wheel usage (single/dual). The
speed rating is the maximum speed a tire is
certified to carry a load.
A letter code is used to
:
The service description
: