Inspection, Service and Maintenance
Bri-Mar
131
8.2.10 Tires
Trailer tires may be worn out even though they still have plenty of treat
left. This is because trailer tires have to carry a lot of weight all the time,
even when not in use. It is actually better for the tire to be rolling down
the road than to be idle. During use, the tire releases lubricants that are
beneficial to tire life. Using the trailer tires often also helps prevent flat
spots from developing. The main cause of tire failure is improper
inflation.
Before each tow and at least once a month thereafter, be sure to check the
tire pressure to make sure it is at the level indicated on the
VIN/Certification Label. Tire pressure must be checked while the tire is
cold. Do not check the tire pressure immediately after towing the trailer.
Allow at least three hours for a tire to cool, if the trailer has been towed
for as much as one mile.
Wheel and tire manufacturers recommend adjusting the air pressure to
the maximum pounds per square inch (PSI) listed on the sidewall of the
tire when the trailer is fully loaded. If the tires are inflated to less than
the
maximum inflation level, the load carrying capacity of the tire could be
dramatically affected. Refer to the owner’s manual or talk to your dealer
or vehicle manufacturer if you have any questions regarding proper
inflation practices.
The tires can lose air over a period of time. In fact, tires can lose 1 to 3
PSI per month. This is because molecules of air, under pressure, weave
their way from the inside of the tire, through the rubber, to the outside.
A drop in tire pressure could cause the tire to become overloaded,
leading to excessive heat build up. If a trailer tire is under-inflated, even
for a short period of time, the tire could suffer internal damage.
High speed towing in hot conditions degrades trailer tires significantly.
As heat builds up during driving, the tire’s internal structure starts to
breakdown, compromising the strength of the tire. It is recommended to
drive at moderate speeds.
Trailers
Summary of Contents for DT508LP
Page 144: ...Electrical Drawings Bri Mar 138 Trailers...
Page 145: ...Bri Mar 139 9 ELECTRICAL DRAWINGS Trailers...
Page 146: ...Bri Mar 140 Trailers...
