A4 Quattro Cabriolet V6-3.2L (BKH) (2007)
3. Bead core
4. Wheel flange
Seating of tires with run-flat capability (PAX)
Due to the construction of the tire, it remains firmly attached to the wheel in all driving situations.
A wedged-shaped component of the tire is thereby pressed between the bead core and rim by the load. This occurs regardless of the tire pressure.
Dimensions of tires with run-flat capability (PAX)
As compared to standard tires, run-flat tires (PAX) have different dimensions and designations.
Run-flat tires (PAX) can only be installed to special wheels designed for the PAX system.
1. Width in millimeters: tire width from sidewall to sidewall on the standard rim (corresponds to the width dimension on standard tires)
2. Outer diameter in millimeters: maximum diameter of the new tire
3. Nominal diameter in millimeters on standardized rim seat
4. Small bead diameter in millimeters: outer rim seat
5. Larger bead diameter in millimeters: inner rim seat
Codes and designations on tires with run-flat capability (PAX)
As compared to standard tires, run-flat tires (PAX) have different codes and designations on the sidewall. This makes it easy to identify run-flat tires.