Common Tire Wear Patterns; Lug Nut Torque; Wheel Alignment - Thor Motor Coach CLASS B Owner's Manual

T I R E S A N D W H E E L S

Common Tire Wear Patterns

IF YOUR
FRONT
TIRES
LOOK
LIKE THIS
TIRE
PATTERN
4
COMMON
CAUSE
NOTE: The use of tire traction devices (studded tires or snow chains) may either be prohibited or required in certain
travel regions and/or weather conditions. Always check with the state's Department of Transportation for vehicle
operating regulations and guidelines.

Lug Nut Torque

As part of your pre-travel check-list, always check
lug nut torque with a properly calibrated torque
wrench. Torque lug nuts to the vehicle manufacturer's
specifications.
Always properly torque lug nuts as part of a tire
changing procedure.
Ensuring wheel mounting nuts (lug nuts) on the wheels are
tight and properly torqued is an vitally important responsibility
for safe motorhome travel. Inadequate and/or inappropriate
wheel nut torque (tightness) is a major reason that lug nuts
loosen or fail in service. Loose lug nuts can rapidly lead to a
wheel separation with potentially serious safety consequences.
Refer to the chassis manufacturer's information for proper
lug-nut torque and tightening sequence.
26 C U S T O M E R C A R E
TOE CAMBER
VEHICLE
VEHICLE
WHEEL WHEEL
ALIGNMENT ALIGNMENT
CAUTION CAUTION
| 8 7 7 . 8 5 5 . 2 8 6 7
CENTER EDGE CUPPING
TIRE VEHICLE
TIRE
OVER UNDER WORN
INFLATION INFLATION SUSPENSION

Wheel Alignment

The front suspension and steering system of this
motorhome was factory aligned prior to it being
dispatched to the dealership. The alignment is however,
greatly affected by the way the unit is loaded prior to
travel. This loading includes how much cargo, water,
and LP are carried as well as the distribution of said
cargo. Thor Motor Coach advises to have the alignment
checked in the fully loaded condition (the way you
would normally load the unit to travel). Not having the
alignment checked and reset can result in abnormal
tire wear.
It is very important to maintain proper wheel alignment for
your motorhome. Improper wheel alignment not only con-
tributes to premature tire wear, but severely affects vehicle
handling. Toe-in and toe-out (only) are inspected by TMC
prior to shipment to your selling dealer.
PATCHY
TIRE
OUT OF
BALANCE
NOTICE NOTICE