For the proper mounting of
tires, be sure to observe some basic precautions:
Wheel is securely seated on the
All lugs have proper torque.
There is no buildup of dirt between
the hub and wheel.
The wheel is not bent.
Both tire beads are securely seated
on the rim.
Proper tire and wheel assembly balancing
is important from a vehicle safety standpoint. In high-speed driving,
improperly balanced tire/wheel assemblies will cause a vehicle
to lose stability and not operate in a safe and comfortable manner.
Improperly balanced tire/wheel assemblies also cause abnormal
To facilitate proper balancing,
most tire manufacturers place red and yellow marks on the sidewalls of its tires
to enable the best possible match-mounting of the tire/wheel assembly.
There are two methods of match-mounting tires to wheel
assemblies using these red or yellow marks:
Uniformity (red mark)
underinflation, overloading or tire damage may result in tire
failure, which may lead to serious injury. Tire and rim sizes
must correspond for proper fit and application. Never exceed 40
psi to seat beads.
Tire changing can be dangerous, and should be done only by trained
persons using proper tools and procedures established by the Rubber
Manufacturers Association. Failure to comply with proper procedures
may result in incorrect positioning of the tire, tube, or wheel
assembly, causing the assembly to burst with explosive force sufficient
to cause serious physical injury or death. Never mount or use
damaged tires, tubes, or wheel assemblies.
Proper Installation and
With some custom fitments, it is necessary
to use spacers in order to achieve proper clearances. Whenever
the assembly comes into contact with inner fender members, brake
calipers or ball joints, consult the wheel manufacturer for recommendations
on the proper use of spacers.
Spacers are sometimes necessary
when wheels of the proper offset are not available. However, there
are some drawbacks to their use:
Spacers are made in various quality
grades. Some spacers may not be able to withstand the forces
generated by aggressive or competitive vehicle use.
Spacers that use a generic or slotted
pattern (for use on a variety of hub patterns) may make proper
location of the assembly very difficult.
Spacers may necessitate longer lug
for Light Truck Applications
Because light trucks demand special
load-capacity considerations, we've compiled a few rules that
should be observed:
Using passenger tires
on light trucks.
Using passenger car tires on light
trucks should be approached with caution. The varied service that
a light truck undergoes means that the rated load-carrying capacity
of a passenger car tire used on it is reduced. When referencing
a passenger car tire for light truck use, decrease the load specification.