JLG T500J Operator Manual - Manual (Page 123)

SECTION 7 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
3121197 – JLG Lift – 7-19
Figure 7-3. Information on Tires - Sheet 2 of 2
1. Tire Application - This letter identifies the tire by applica-
tion.
• LT = Light Trucks or Trailers
• ST = Trailer use only
2. Tire Width - This three-digit number gives the width in mil-
limeters of the tire from sidewall edge to sidewall edge. In
general, the larger the number, the wider the tire.
3. Aspect Ratio - This two-digit number, known as the aspect
ratio, gives the tire's ratio of height to width. Numbers of 70
or lower indicate a short sidewall for improved steering
response and better overall handling on dry pavement.
4. Radial - The "R" stands for radial. Radial ply construction of
tires has been the industry standard for the past 20 years.
5. Wheel Diameter - 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.
6. Maximum Load Rating - This number indicates the maxi-
mum load in kilograms and pounds that can be carried by
the tire.
7. Maximum Permissible Inflation Pressure - This number is
the greatest amount of air pressure that shall ever be put in
the tire under normal driving conditions.
8. Ply Rating - The term "Ply Rating" is used to identify a given
tire with its maximum load when used in a specific type of
service. It is an index of tire strength and does not necessar-
ily represent the number of cord plies in the tire.
9. Load Range - A letter (A,B,C etc.) used to identify a given
size tire with its load and inflation limits when used in a spe-
cific type of service.
10. Tire Ply Composition and Materials Used - The number of
plies indicates the number of layers of rubber-coated fabric
in the tire. In general, the greater the number of plies, the
more weight a tire can support. Tire manufacturers also
must indicate the materials in the tire, which include steel,
nylon, polyester, and others..