Volkswagen Polo Service & Repair Manual: Wear Spots
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A wear spot is a flat spot on the tread of the tires that
can be caused by extreme braking maneuvers on subsurface such as
asphalt. |
| At the same time a tire during the braking maneuver is
rubbed at selective points which causes a tire imbalance. |
| The consequences of a wear spot is strong vibrations in the
vehicle, which can lead to a worsening of the driving behavior
and a higher noise generation. |
| In most cases the tire tends to lock up due to the larger
running surface at this location even with a slightly reduced
braking effect leading to an increase in the vibrations. |
| Only for low intensity wear spots can the vibrations
disappear after a short time through further wear on the tire. |
Caution
| “Large” wear spots due to wheel lock are
irreparable! Tires with such damage must be replaced. |
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Cracking is the term for shallow cracks in the sidewall of
the tire.
They run starting from the bulge in the direction of the
tire shoulder. Se ...
A swelling in the flank of the tire indicates that the
substructure of the carcass has been damaged.
Typical ...
Other materials:
Vibration, Road Test, Performing Before Balancing
If a vehicle comes to the workshop with the complaint
“vibration”, a road test must be performed before balancing the
wheels.
That way, information about the type of vibration can be
obtained.
Obser ...
Vibration, Vibration Control System
Expanded functions can be performed using Hunter RFT33VAG
Road Force Touch™ Wheel Balancer -VAS6230B4- in addition to the
previously known balancers.
A special characteristic of this system is testing the
radial force of wheel/tire dur ...
Refrigerant Circuit
A/C System Repair Information
An A/C system made for refrigerant R12 must not be filled
with refrigerant R134a without making modifications to the
refrigerant circuit. Refer to
→ Chapter „Refrigerant Circuit, Converting R12 to R134a and
Ser ...
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Cracking
Tire Sidewall Swelling