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ST: Indicates the tire is a special tire for trailers in
highway service.
215: Indicates the nominal width of the tire in millime-
ters from sidewall edge to sidewall edge. In general,
the larger the number, the wider the tire will be.
65: Indicates the aspect ratio which gives the tire's
ratio of height to width.
R: Indicates a "radial" type tire.
15: Indicates the wheel or rim diameter in inches.
Tire Ply Composition and Materials Used: Indicates
the number of plies or the number of rubber-coated
fabric in the tire tread and sidewall. Tire manufactur-
ers also must indicate the ply materials in the tire and
the sidewall, which include steel nylon, polyester,
and others.
Maximum Load Rating: Indicates the maximum
load in kilograms and pounds that can be carried by
the tire. Refer to the Certification Label on the port
forward half of the trailer for the correct tire pressure
for your trailer.
B. Sample Tire Registration
NOTICE:
Manufacturer's Tire Registry: Be sure to fill out
the tire registration form provided with your
owner's packet. Mail it to the tire manufacturer
for the purpose of Federal Defect Notification
Regulations. See Figure S22.
Labels located on the port side
of the forward half of the trailer.
Trailer Information - Section S
Figure S22: Sample Tire Registration Form
C. Inflating Your Tires
Safe operation of your trailer requires that your tires
are properly inflated. Remember that a tire can lose
up to half of its air pressure without appearing flat.
Before each trip, check your tires with a tire gauge,
including the spare (if equipped). Inflate all tires
to the inflation pressure recommended on the Tire
Label and/or on the Certification Label located on the
port side of the forward half of the trailer. See Figures
S23 & S24. Failure to follow the tire pressure recom-
mendations can cause uneven treadwear patterns
and adversely affect the way your trailer handles.
Figure S24: Certification Label
Figure S23: Tire Label
Owner's Manual Page 147
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