Driving & Safety --- Section 2
The Executive 2005
77
Tire Components:
Tread: Provides traction and cornering
grip.
Belts: Stabilize and strengthen the tread.
Sidewall: Protects the side of the tire from
road and curb damage.
Body Ply: Gives the tire strength and
flexibility.
Bead: Assures an air-tight fit with the
wheel.
Inner Liner: Keeps air inside the tire.
Importance of Air Pressure
The most important factor in maximizing the life of the tires is maintaining proper inflation. Driving
on any tire that does not have the correct inflation pressure for the load of the motorhome is dangerous
and may cause premature wear, tire damage and/or loss of control of the motorhome.
An under-inflated tire will build up excessive heat that may go beyond the design limits of the rub-
ber and radial cords and could result in sudden failure. An under-inflated tire will also cause poor
motorhome handling, rapid and/or irregular tire wear and an increase in rolling resistance that
results in a decreased fuel economy.
An over-inflated tire will reduce the tire's footprint/contact patch with the road, thus reducing trac-
tion, braking capacity and handling of the motorhome. Over-inflation of a tire for the load will result in
a harsh ride, uneven tire wear and is susceptible to impact damage.
Maintaining correct tire inflation pressure for each loaded wheel position on the motorhome is of
the utmost importance and must be a part of regular motorhome maintenance.
WARNING:
Driving on a tire that is under-inflated can exceed the design limits of the tire and may
damage the sidewall. A damaged sidewall can burst upon inflation resulting in serious
damage, injury or death. Aged tires are also susceptible to sidewall damage.
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