2000 Audi S4 AutomaticFACTORY OEM SERVICE PROCEDURE

Disc Brake Specifications

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DISC BRAKE SPECIFICATIONS

Application (Production Code) (1) In. (mm)
Front
FN3 W/ 15" Wheels (1LB, 1LE)
Ventilated Disc
Disc Diameter 11.34 (288)
Lateral Runout (2)
Original Thickness .984 (25)
Minimum Thickness .906 (23)
Caliper Piston Diameter 2.24 (57)
Brake Pads (Minimum Thickness) (3)
Front .28 (7)
Rear .28 (7)
FN3 W/ 16" Wheels (1LT, 1LF)
Ventilated Disc
Disc Diameter 12.28 (312)
Lateral Runout (2)
Original Thickness .984 (25)
Minimum Thickness .906 (23)
Caliper Piston Diameter 2.24 (57)
Brake Pads (Minimum Thickness) (3)
Front .28 (7)
Rear .28 (7)
FNR-G60 (1LA, 1LG)
Ventilated Disc
Disc Diameter 12.63 (321)
Lateral Runout (2)
Original Thickness 1.18 (30)
Minimum Thickness 1.10 (30)
Caliper Piston Diameter 2.36 (60)
Brake Pads (Minimum Thickness) (3)
Front .28 (7)
Rear .28 (7)
HP2 W/ 16" Wheels (1LX, T7Z)
Ventilated Disc
Disc Diameter 12.63 (321)
Lateral Runout (2)
Original Thickness 1.18 (30)
Minimum Thickness 1.10 (28)
Caliper Piston Diameter 1.69 (42.8) (4)
Brake Pads (Minimum Thickness) (3)
Front .28 (7)
Rear .28 (7)
Brembo W/ 18" Wheels (1LJ)
Ventilated Disc
Disc Diameter 14.37 (365)
Lateral Runout (2)
Original Thickness 1.34 (34)
Minimum Thickness 1.26 (32)
Caliper Piston Diameter (5) 1.10 & 1.26 (28 & 32)
Brake Pads (Minimum Thickness) (3)
Front .28 (7)
Rear .28 (7)
Rear
C38 (1KD)
Non-Vented Disc
Disc Diameter 9.65 (245)
Lateral Runout (2)
Original Thickness .394 (10)
Minimum Thickness .315 (8)
Caliper Piston Diameter 1.50 (38.1)
Pad Thickness NEW W/Out Backing Plate .472 (12)
Pad Wear Limit W/Out Backing Plate .078 (2)
C43 (1KE)
Non-Vented Disc
Disc Diameter 10.03 (255)
Lateral Runout (2)
Original Thickness .394 (10)
Minimum Thickness .315 (8)
Caliper Piston Diameter 1.69 (42.8)/1.60 (40.8)
Pad Thickness NEW W/Out Backing Plate .472 (12)
Pad Wear Limit W/Out Backing Plate .078 (2)
C43 (1KE)
Ventilated Disc
Disc Diameter 10.59 (269)
Lateral Runout (2)
Original Thickness .866 (22)
Minimum Thickness .787 (20)
Caliper Piston Diameter 1.69 (42.8)/1.60 (40.8)
Pad Thickness NEW W/Out Backing Plate .472 (12)
Pad Wear Limit W/Out Backing Plate .078 (2)
C43 (1KZ)
Ventilated Disc
Disc Diameter 13.98 (355)
Lateral Runout (2)
Original Thickness .866 (22)
Minimum Thickness .787 (20)
Caliper Piston Diameter (43 & 41)
Pad Thickness NEW W/Out Backing Plate .472 (12)
Pad Wear Limit W/Out Backing Plate .078 (2)
(1) Brake systems are identified by Production Codes e.g. 1LB or 1LJ, to identify brake system fitted to vehicle, see BRAKE SYSTEM IDENTIFICATION  under IDENTIFICATION.
(2) Information not available from manufacturer.
(3) Pad measurement includes backing plate.
(4) HP2 calipers are 2 piston design.
(5) Brembo calipers are 8 piston design.
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Return to Chapter: Section 20 (Brake System)
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