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:
Two-Part Filler
Definition:
Two-Part Filler -LLS MAX 202 M2-, medium gray
Edition 03/2013
Product Description
The Two-Part Filler -LLS MAX 202 M2-, (medium gray) is a
high-quality two-part H ...
Overview - Rim
1 -
Rim Flange
Stop for the side tire bead
2 -
Hump (H2) on Both Bead Seats
Prevents the tire from slipping off the bead seat when driving
around tight curves
An extended hump (EH2) is requir ...
Changing the bulb in the number plate light
Fig. 186 In the rear bumper:
number plate light
Fig. 187 Number plate light:
removing the bulb holder
First read and observe the introductory
information and safety warnings
A normal flat screwdriver can be used to remove the number plate light .
The actions sh ...
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Tires, Rolling Noises, General Information