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:
Interior mirror
Fig. 78 Manual anti-dazzle interior mirror
Fig. 79 Automatic anti-dazzle interior
mirror
First read and observe the introductory information
and safety warnings
The driver must adjust the interior mirror so that they can see clearly through
the rear window.
The driver’s rear view may ...
Aquaplus System (Solid and Metallic)
Definition:
Water-Based Solid Mixed Paint -LWM 075 ...-
Water-Based Metallic Mixed Paint -LWM 076 ...-
Water-Based Solid Base Paint -LUW/LWG 038 ...-
Water-Based ...
Introduction
This chapter contains information on the following subjects:
→ Positive and earth jump lead connection points
→ How to start the engine using jump leads
If the engine fails to start because the vehicle battery is flat, the flat
battery can be connected to the battery of anothe ...
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Tires, Rolling Noises, General Information