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:
Stowage compartment
on the front passenger side
Fig. 97 Stowage compartment on the front
passenger side
Fig. 98 Open stowage compartment on the
front passenger side
First read and observe the introductory information
and safety warnings
Opening and closing the stowage compartment
To open, pull up the opening lever .
To close ...
Antenna Wires, Repairing
Aerial Cable Repair Set -VAS6720
Special tools and workshop equipment
required
Repair Set, Aerial Cable -VAS6720-
Checking the Antenna Wire. Refer to
Replacing the Tool Head. Refer to
...
Synchronising the vehicle key
First read and observe the introductory information
and safety warnings
It may no longer be possible to lock or unlock the vehicle with the remote control
if the button is pressed
repeatedly outside of the effective range of the vehicle key. If this is the case,
the vehicle key ...
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Tires, Rolling Noises, General Information