First read and observe the introductory
information and safety warnings
The underside of the vehicle is coated to protect it from corrosion and damage. The protective coating on the underside of the vehicle could be damaged when driving. Volkswagen recommends therefore that the protective coating on the underside of the vehicle and on the running gear should be checked regularly and repaired if necessary.

CAUTION
De-icing door lock cylinders
Cleaning the engine compartmentVolkswagen Touran Service Manual. Wheel, Balancing, Tire and Wheel Radial and Lateral Run-Out, Checking
Before beginning balancing, the following requirements must
be fulfilled.
The tire pressure must be OK.
The tire profile must not be worn on one side. The tire
profile must be at least 4 mm.
...
Volkswagen Touran Service Manual. Run-Flat System PAX, Support Ring
Dimensions
Overview of the most important dimensions:
Names
Example: 90-500(35) CLI A 1 876107
90 -
Designated width in millimeter ...