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 compartments in the front centre console
Fig. 94 In the centre console: stowage
compartment at the front
Fig. 95 In the centre console: stowage
compartment next to the handbrake lever
First read and observe the introductory information
and safety warnings
There is an open stowage compartment with lighting in the front centre con ...
Disintegrated Tread
Tires with Torn-Out Tread
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.
Il ...
Two-Part Wash Primer
Definition:
Two-Part Wash Primer -LLS MAX 230 M1-, olive green (250 ml)
Edition 12/2013
Product Description
The Two-Part Wash Primer -LLS MAX 230 M1- is a zinc
chromate-free, ...
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Tires, Rolling Noises, General Information