Volkswagen Golf Service & Repair Manual: Swellings in the tyre sidewall
| A swelling in the sidewall of the tyre indicates that the
substructure of the carcass has been damaged. |
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| Typical causes for such damage include, for example, driving
over kerbs at a sharp angle. |
| Pinching the tyre in this way can damage the carcass. |
| The substructure of the tyre is stretched so far that
individual fibres in the carcass may be broken. |
| The extent of the damage depends on the speed of impact, the
angle of impact, the tyre pressure, the axle load and the type
of obstacle. |
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| Pinch marks on tyre sidewall -arrows- |
 Note
| Driving over kerbs should be avoided. |
| If you cannot avoid driving over a kerb, you should do so
very slowly and as square-on as possible. |
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| Interior view of a tyre with a punctured carcass |
| Due to a severe impact, the carcass was pinched on the wheel
rim flange and is ruptured in the contact area. |
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| Damage inside tyre due to impact injury (double rupture) |
| Double rupture -arrows- caused
by pinching when a kerb was driven over. Often not detectable
from outside. |
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| Cut caused by a sharp-edged obstacle
-arrow- |
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This type of flat spots may be caused by hard braking on a
rough surface such as a tarmac road.
During this type of braking manoeuv ...
Driving over hard, pointed objects like nails, screws and
the like can pierce the tyre.
This always leads to tyre damage.
...
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First read and observe the introductory information
and safety warnings General notes
There are different types of air recirculation mode:
Manual
air recirculation mode (heating system, air conditioning (manual), Climatronic).
...
Checking fuel delivery rate
Special tools and workshop equipment required
Removal wedge -3409-
Remote control for V.A.G. 1348 -V.A.G 1348/3A-
Multimeter e.g. hand-held multimeter -V.A.G 1526E-
Test instrument adapter/DSO (5-pin) -VAS 5565-
...
Removing and installing flap for charging bay
Removing
–
Removing radiator grille
→ Chapter
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Remove bolts -2-.
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Push flap for charging bay -1- towards
side, -arrow a-.
...
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Flat spots caused by hard braking
Damage caused by foreign bodies