Audi 100 1991 Repair Manual page 55

Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Wheel and Tire Guide - Edition 11.2010
Wide furrows along the circumference in the area of the bead in‐
dicate that the tire was driven with insufficient air pressure.
Driving a vehicle with insufficient tire pressure or ignoring or not
recognizing tire damage can have serious consequences.
The tire can no longer withstand the forces developing during
travel.
The function of the tire is limited by the defects mentioned above.
The rubber compounds separate from one another, resulting in
partial separation of tire components up to complete destruction.
Such damage usually develops over a longer period of time. If an
already damaged tire is exposed to high stress, the centrifugal
force at higher speeds can tear components off the tire.
1.18.14 Slow Loss of Air Pressure
The slow loss of tire pressure is an especially tricky process be‐
cause even experienced drivers often do not notice it.
The insufficient air pressure and the related increase in force re‐
quired to flex the tire (inner friction) cause the tire material to heat
up so much that the various components and rubber compounds
can separate.
The final stage is usually the complete destruction of the tire.
The cause for the slow pressure loss cannot always be deter‐
mined because the tire is severely damaged and components of
the tire are missing.
The following pages show tires that were destroyed by driving
with low tire pressure.
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1.18.15 Tire Temperature Rising When Tires
with respect to the correctness of information in this document. Copyright by AUDI AG.
Pressure Is Too Low
The diagram shows the temperature behavior of a tire at 180 km/
h.
A - Normal range. When maintaining the specified tire pressure,
the temperature remains stable.
B - Danger zone. When the air pressure is 0.3 bar below specifi‐
cation, the temperature rises to above 120 °C at higher speeds.
C - Critical temperature limit. The tire defect is triggered.
T - Temperature.
t - Driving time in minutes.
1.18.16 Cracked Tires
Applies to cracks on tires or tread blowouts and tire breaks.
it is not possible to bill for damage to external effects.
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1. General Information