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TIRE SAFETY INFORMATION
1.1. Tire Safety Information
This portion of the User’s Manual contains tire safety information as required by 49
CFR 575.6.
Section 2.1 contains
“Steps for Determining Correct Load Limit - Trailer”.
Section 2.2 contains
“Steps for Determining Correct Load Limit – Tow Vehicle”.
Section 2.3 contains a Glossary of Tire Terminology
, including “cold inflation pressure”,
“maximum inflation pressure”, “recommended inflation pressure”, and other non-
technical terms.
Section 2.4 contains information from the NHTSA brochure entitled
“Tire Safety –
Everything Rides On It”.
This brochure This brochure, as well as the preceding subsections, describes the
following items;
Tire labeling, including a description and explanation of each marking on the tires,
and information about the DOT Tire Identification Number (TIN).
Recommended tire inflation pressure, including a description and explanation
of:
A.
Cold inflation pressure.
B.
Vehicle Placard and location on the vehicle.
C.
Adverse safety consequences of under inflation (including tire failure).
D.
Measuring and adjusting air pressure for proper inflation.
Tire Care, including maintenance and safety practices.
Vehicle load limits, including a description and explanation of the following
items:
A.
Locating and understanding the load limit information, total load
capacity, and cargo capacity.
B.
Calculating total and cargo capacities with varying seating
configurations including quantitative examples showing / illustrating how
the vehicles cargo and luggage capacity decreases as combined
number and size of occupants’ increases. This item is also discussed in
Section 3.
C.
Determining compatibility of tire and vehicle load capabilities.
D.
Adverse safety consequences of overloading on handling and stopping
on tires.
1.2. Steps for Determining Correct Load Limit
– Trailer
Determining the load limits of a trailer includes more than understanding the load limits
of the tires alone. On all trailers there is a Federal certification/VIN label that is located
on the forward half of the left (road) side of the unit. This certification/VIN label will
indicate the trailer’s Gross Vehicle Weight Rating (GVWR). This is the most weight the
fully loaded trailer can weigh. It will also provide the Gross Axle Weight Rating
(GAWR). This is the most a particular axle can weigh. If there are multiple axles, the
GAWR of each axle will be provided.
If your trailer has a GVWR of 10,000 pounds or less, there is a vehicle placard located
in the same location as the certification label described above. This placard provides
tire and loading information. In addition, this placard will show a statement regarding
maximum cargo capacity. Cargo can be added to the trailer, up to the maximum weight
specified on the placard. The combined weight of the cargo is provided as a single
