Volkswagen Touran Service Manual: Run-Flat Tire PAX, Repairing

General Information
It is generally not necessary to replace a tire after going flat and after driving on a flat tire.
  Note
The affected tire should be removed and checked for damaged by trained professionals. Assembly work and damage diagnosis on the affected tire should only be performed by trained personnel.
Proceed as follows to examine a tire with emergency running characteristics (PAX) after going flat:
  First, the remaining gel must be removed from the tire. The flat side of the spatula is suitable for this.
  Then clean the tire and supporting ring with water and a cloth to remove the remaining gel residue.
  After separating tire and supporting ring, evaluate both of these components (PAX) according to the criteria described in the following section.
Additional notes:
  When remounting, ensure the used supporting ring fits the tire and rim dimensions.
  The rim must be inspected before mounting, as with conventional wheel/tire systems.
  A damaged rim should be replaced.
   
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