Disc Wheel Structure
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
- Rim Flange
- Stop for the side tire bead
- Hump (H2) on Both Bead Seats
- Prevents the tire from slipping off the bead seat when driving around tight curves.
- An extended hump (EH2) is required when using run-flat tires. Refer to DISC WHEELS, IDENTIFICATION .
- Bed
- Makes it easier to mount the tire.
- A - Rim Width
- Distance between the tire contact surfaces on both rim flanges.
- Dimensions in inches.
- B - Rim Diameter
- Distance between the rim contact surfaces on the opposite tire shoulders.
- Dimensions in inches.
- C - Offset
- Distance between the vertical wheel center and the inner wheel contact surface.
- Dimensions in mm.
- D - Pitch Circle Diameter
- Circle diameter where the wheel bolt holes are located.
- Dimensions in mm.
- E - Center Hole
- Enables centering.
- Dimensions in mm.