This article is from the VW Technical FAQ, by with numerous contributions by Jan Vandenbrande others.
A: Pre-80:
Fronts= (A1) Teves or Girling discs (early Euro had drums as well)
Rears = (A1) drums, non-self adjusting
Post-80:
Fronts= (A1/A2)
Kelsey Hayes ("Banana pads"): Sciroccos 8V, GTIs 8V
Girling: 16V Sciroccos, >90 Passats & Corrados
Non-vented rotors on most initially, vented for higher end cars.
Rotor diameter increased over the years.
ATE: Wolfsburg-built GLIs 8V
Rears = (A1/A2)
self adjusting drums
Teves disc (high end)
Girling: Wolfsburg-built GLIs 8V
General:
Later cars have brake proportioning valves, several types used, some are
with the master cylinder (e.g., 84S) others are in front of the rear
axle beam on the left hand side.
Front Vented Rotor Sizes:
239 mm (9.4") A1/A2 models
256 mm (10.1")
280 mm (11" 4 hole, 6 hole for VR6) Corrados, Passats
Rear Solid Rotor Size:
226 mm (9.0")
For 14" wheels, you can go up to 10.1" rotors (and the matching
calipers). For 13" wheels, 9.4" rotors is your max. If you want the
11" rotors of the corrado, then you need 15" wheels! :-)
See also Brake_Upgrades
 
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