Brake system specifications (Mercedes-Benz C-Class W203)

General parameters
Design	Hydraulic, dual-circuit with vacuum booster. Electronic anti-skid system (stability stabilization - ESP), Brake Assist (BAS) and Anti-lock Brake System (ABS)
Braking mechanisms	Disk
Brake discs	Made of composite material aluminum + steel
Ventilated	On the front wheels and rear models C32AMG
Solid with perforation	On the rear wheels, except for C32AMG
Parking brake	Pedal, with cable drive to the rear wheels
Dimensions of front brake discs, mm
Diameter/Thickness of new
models up to 163 hp. (Coupe up to 197 hp)	288/25
models from 170 hp.	300/28
models C32AMG	345/32
Wear limit by thickness
models up to 163 hp. (Coupe up to 197 hp)	22.0
models from 170 hp.	25.4
models C32AMG	27.4
Dimensions of rear brake discs, mm
Diameter/Thickness of new
models up to 163 hp. (Coupe up to 197 hp)	278/9
models from 170 hp.	290/10
models C32AMG	300/22
Wear limit by thickness
models up to 163 hp. (Coupe up to 197 hp)	7.3
models from 170 hp.	8.3
models C32AMG	19.0
Thickness of the front brake shoe lining, mm
Permissible wear (without base plate)	2
Pressure in the hydraulic drive depending on the pressure on the brake pedal at the pressure in the intake manifold, atm.	0.75-0.8
Brake pedal pressure, N	Hydraulic drive pressure, atm. ATE T52/4A 225 210 or Lucas LSC 115//ATET52/4A 255 225
100	35-45//35-47
150	53-63//57-69
200	71-81//78-92
250	87-98//95-05
Vacuum booster diameter, mm	(ATE T52/4A 255 225): 228.6/254
Gain factor	6.85
Tightening force of threaded connections, Nm
Tightening torques for fasteners are also given in the text of the Chapter and in some illustrations*.
*Tightening torques highlighted in bold in the text must be strictly observed; efforts not in bold are given only as an estimate
Front support to bracket	25
Front wheel hub bracket	115
Rear support to bracket	55