A4 Quattro Cabriolet V6-3.2L (BKH) (2007)
Repairing tires with run-flat capability (PAX)
General information
It is not always necessary to replace a tire after it has lost pressure and then been run in an un-inflated condition.
Note:
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The affected tire should be removed and checked for damage by qualified personnel. Mounting of tires and checking tires for damage must only be
carried out by qualified personnel.
After a run-flat tire (PAX) has lost inflation pressure, check the tire as follows:
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First remove as much gel residue from the tire as possible. Use the flat side of the putty knife to do so.
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Then clean away any remaining gel residue from the tire and support ring using water and a cloth.
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After separating the tire and support ring, check both components (PAX) according to the following criteria.
Note:
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When re-installing, make sure the support ring is the correct size for the tire and wheel dimensions.
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As with standard tire/wheel systems, the PAX wheel must also be checked before installing.
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Damaged wheels must be replaced.
Checking tires
When checking a tire, look out especially for the following:
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Surface erosion or ripples on the inner side (inflation pressure was too low or not sufficient for the load)
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Loose rubber or loose radial threads
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Separated or deformed bead core