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:
Driving
a loaded vehicle
First read and observe the introductory information
and safety warnings
For good vehicle handling when driving a loaded vehicle, please observe the following:
Stow all items of luggage securely .
Accelerate carefully and gently.
Avoid sudden braking and driving manoeuvres.
...
Introduction
This chapter contains information on the following subjects:
→ Locking or unlocking the driver door manually
→ Locking the front passenger door and rear doors manually
→ Unlocking the tailgate manually
→ Unlocking the selector lever lock manually
If the vehic ...
Smooth Tube, Repairing
A new repair concept has been developed for repairing washer
system hoses. Various individual hose connectors, adapters,
Ethylene Propylene Diene Methylene (EPDM) rubber hoses and
shrink tubing will be offered as replacement parts.
Smoot ...
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