Volkswagen Polo Service & Repair Manual: Wear Spots
| Wear spots are caused by a hard stop with locked wheels
whereby the rubber compound is abraded from the contact patch. |
| When the tires slide across the road surface, frictional
heat is generated which reduces the abrasion resistance on the
tread compound. |
| Even the most abrasion-resistant tread compound cannot
prevent wear spots which can occur during extreme braking. |
| Even ABS cannot completely prevent brief locking and the
resulting slightly flat spots. |
| The degree of abrasion is primarily dependent on the vehicle
speed, road surface and tire load. For clarification see the
following examples. |
| If a vehicle with locked front wheels is decelerated until
it comes to a stop, the abrasion of rubber on the post card
sized contact patch is approximately |
| from 57 km/h (35.41 mph) = 23.8 m braking distance, up to
2.0 mm, |
| from 75 km/h (46.60 mph) = 41.8 m braking distance, up to
3.3 mm, |
| from 92 km/h (57.16 mph) = 71.6 m braking distance, up to
4.8 mm. |
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| Tires with this type of damage cannot be used and must be
replaced. |
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Rolling noise perceived by the human ear is caused by
vibrations transmitted from the noise source to the ear via the
air.
Here we are interest ...
Other materials:
Handling Pressure Vessels
Secure vessels to prevent them falling over!
Secure upright cylinders to stop them falling over and
cylinders lying flat to stop them rolling away.
Do not throw vessels!
If dropped, the vessels cou ...
Indicator lamps
Fig. 55 In the upper section of the centre
console: indicator lamp for disabled front passenger front airbag
First read and observe the introductory information
and safety warnings
Lit up
Location
Possible cause
Solution
Instrument c ...
Introduction
This chapter contains information on the following subjects:
→ Socket in the vehicle
Electrical equipment can be connected to the socket in the vehicle.
The devices connected must be in good condition and fault-free.
Additional information and warnings:
Cigarette lighter
Acce ...
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Tires, Rolling Noises, General Information