Audi Workshop Service and Repair Manuals

Brake system

Diagonally split dual-circuit brake system, anti-lock brake system (ABS), with electronic
brake pressure distribution (EBPD), electronic differential lock (EDL) and traction control system (TCS).
Electronic stability programme, ESP
(ABS with EDL, EBD and optional ESP)

Brake master cylinder

øin mm

22.2

22.2

Brake servo, vacuum from intake manifold or vacuum pump

øin inches

LHD models 9''

RHD 8 ''

Boost factor

i =4.5

i =4.5

Front brakes

Brake caliper

FS 1- Alu-13"

FS 3 14"

Production-relevant-No. (Pr. No.)

1ZB

1LY

Brake disc

øin mm

239

256

Brake disc, thickness

mm

15 ventilated

22 ventilated

Break disc, wear limit

mm

13

20

Brake caliper, piston

øin mm

48

54

Pad thickness including backplate

mm

17

17

Wear limit including backplate

mm

7

7

Rear brakes

Brake drum

Aluminium brake drum

Steel brake drum

C34

Production-relevant No. (Pr. No.)

øin mm

1KR

1KB

1KD

Brake drum / brake disc

øin mm

180

200

232

Brake disc, thickness

øin mm

-

-

9

Brake drum / brake disc, wear limit

øin mm

181.5

201.5

230

Brake piston diameter

øin mm

15.87

17.46

34

Brake pad thickness

mm

5

5

-

Brake pad, width

mm

30

40

-