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:
Securing child seats with the top tether
Fig. 65 Retaining ring for top tether
in the stowage area behind the rear seats
Fig. 66 Top tether hooked over into the
luggage compartment
First read and observe the introductory information
and safety warnings
Observe the child seat manufacturer's instructions when fitting or removin ...
Introduction
This chapter contains information on the following subjects: → Indicator
lamp for the tyre monitoring system
→ Tyre Pressure Loss Indicator
Additional information and warnings:
Volkswagen information system
Transporting items
Braking, stopping and p ...
Retrofitting two-way radios
First read and observe the introductory information
and safety warningsYou will need an external aerial to use a two-way radio
in the vehicle.
Any retrofit installation of electrical or electronic equipment in the vehicle
will affect its vehicle type approval. Under certain circumstances, thi ...
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Tires, Rolling Noises, General Information