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 ...
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Run-Flat Tire, General Information
Run-flat tires have a reinforced sidewall in comparison to
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Two-Part Synthetic Adhesion Filler
Definition:
Two-Part Synthetic Adhesion Filler -LKF 696 009 A2-, white
Two-Part Synthetic Adhesion Filler -LKF 696 040 A2-, black
Edition 08/2013
Product Description
...
Using a child seat on the front passenger seat
Fig. 63 On the sun visor on the passenger
side: airbag sticker
First read and observe the introductory information
and safety warnings
Not all countries allow you to transport children on the front passenger seat.
Not every child seat is suitable for use on the front passenger seat. Volkswa ...
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Tires, Rolling Noises, General Information