Design of wheels (rims)

Make

Audi

Model

A3 Mk1

Section

Wheels and tyres › Wheels, tyres. axle align › Design of wheels (rims)

Running gearDesign of wheels (rims)

Design of wheels (rims)

1 -	Wheel flange

q	Stop for tyre bead (side)

2 -	Hump (H2) on both bead seats

q	Prevents tyre from slipping off bead seat during hard cornering

q	Extended hump (EH2) is mandatory when using run-flat tyres

3 -

Well base

q	Facilitates mounting of tyre

A -

Rim width

q	Distance between tyre contact surfaces at the two wheel flanges

q	Dimensions given in inches

B -	Rim diameter

q	Distance between tyre contact surfaces on opposite tyre shoulders

q	Dimensions given in inches

t	1 inch = 2.54 cm (25.4 mm)

t	1 cm = 0.394 inches

C -	Rim offset → Chapter

q	Distance between vertical centre line of wheel and inner mounting face

q	Dimensions given in mm

D -	Bolt hole circle diameter → Chapter

q	Diameter of circle of holes for wheel bolts

q	Dimensions given in mm

E -	Centre hole, hub diameter → Chapter

q	For centring

q	Dimensions given in mm

01 Steering & suspension