VW Golf manuals

Volkswagen Golf Service & Repair Manual: Flat spots (from locking wheels)

Flat spots can result from an extreme brake application which causes the wheels to lock, so that the rubber is worn off at the contact patch between the tread and the road surface.
As the tyres slide over the road surface, friction generates heat, which also reduces the wear resistance of the tread material.
Not even a highly wear-resistant tread compound can prevent the flat spots caused by violent braking.
Even ABS-controlled brake systems cannot prevent brief locking of the wheels, and thus, minor flat spots.
The degree of such wear depends largely on the vehicle speed, the road surface and the load placed on the wheel. The following examples should make this clear.
If a vehicle is braked to a standstill on a dry surface with the wheels locked, the amount of rubber worn from the tyre will cover an area the size of a postcard and will have a thickness of:
up to 2.0 mm from a speed of 57 km/h (23.8 m braking distance)
up to 3.3 mm from a speed of 75 km/h (41.8 m braking distance)
up to 4.8 mm from a speed of 92 km/h (71.6 m braking distance)
   
Flat spots in tread
Tyres with such damage must no longer be used and must be renewed.
 

Flat spots (from locking wheels)

General notes on tyre noise
Tyre noise that can be heard by the human ear is caused by vibrations which are transmitted by the air from the source of the sound to our ears. ...

Vehicle pulls to one side
...

Other materials:

Headlight range control, instrument and switch lighting
Fig. 83 Next to steering wheel: headlight range control First read and observe the introductory information and safety warnings Headlight range control Depending on what level it is set to, the headlight range control   adjusts the position of the light cones in the headlights according ...

Coming Home and Leaving Home functions (orientation lighting)
First read and observe the introductory information and safety warnings The Coming Home function is switched on manually. However, the Leaving Home function is controlled automatically by a twilight sensor. Coming Home Action Switching on ...

Removing and installing damper element for glove compartment lid
Removing –  Move glove compartment lid to service position → Chapter. –  Disconnect connector for glove compartment light switch -E26- on damper element -1-. – ...

© 2016-2020 Copyright www.vwgolf.org