Rim, STUCTURE

Fig 1: Exploded View Of Rim

Courtesy of AUDI OF AMERICA, LLC

1 -
Rim Flange
- Stop for the side tire bead
2 -
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.
3 -
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 bead seats
- 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