Disc Brake System: Specifications

Dimensional Specifications



Front
Wear warning from residual lining thickness 3.0 mm
Brake disc minimum thickness,(MINTH) is stamped in brake shell ventilated 20.4 mm
Brake disc minimum thickness,(MINTH) is stamped in brake shell 330 all ventilated 23.4 mm
Brake disc minimum thickness,(MINTH) is stamped in brake shell M3 ventilated 26.4 mm
Max. machining limit per friction ring side M models must not be machined 0.8 mm
Different thickness on brake linings 0.01 mm
Radial runout of brake lining (measured at largest of brake lining)
Disc installed 0.2 mm
Disc Removed 0.04 mm
Surface finish of braking surface (fine ground) 0.5..3.5 Ra u
Brake disc diameter 323i 286 mm
Brake disc diameter 300 mm
Brake disc diameter M3, 330 all 325 mm


Rear
Different thickness on brake linings 0.01 mm
Radial runout of brake lining (measured at largest of brake lining)
Disc installed 0.2 mm
Disc Removed 0.04 mm
Surface finish of braking surface (fine ground) 0.5..3.5 Ra u
Brake disc diameter 323i Solid: 276 mm
Brake disc diameter Ventilated: 294 mm
Brake disc diameter 330 all Ventilated: 320 mm
Brake disc diameter M3 Ventilated: 328 mm
Wear warning from residual lining thickness 3.0 mm
Brake disc minimum thickness (MINTH) is stamped in brake disc shell Solid: 8.4 mm Ventilated 17.4 mm
Brake disc minimum thickness (MINTH) is stamped in brake disc shell 330 all Ventilated 20.4 mm
Brake disc minimum thickness (MINTH) is stamped in brake disc shell M3 Ventilated 18.4 mm
Max. machining limit per friction ring side 0.8 mm



Torque Values

Bleeding Brakes
Bleed Screw
Wrench size 7 mm 3.5 - 5.0 Nm
wrench size 11 mm 12.0 - 16.0 Nm

Front Wheel Brakes
Brake Disc to Wheel Hub 16 Nm
Note:Contact surfaces between brake disc and wheel hub cleaned and free of grease.
Brake caliper to steering knuckle 110 Nm
Note:Screws slightly oiled, contact surfaces between brake caliper and steering knuckle cleaned and grease free.
Guide Bolt
Wrench Size 7 mm 30 - 35 Nm

Rear Wheel Brakes
Brake drum/disc to wheel hub 16 Nm
Wheel cylinder to brake backplate 10 Nm
Brake carrier on semi-trailing arm/wheel carrier 65 Nm
Brake caliper on semi-trailing arm/wheel carrier 67 Nm
Guide Bolts
Wrench Size 7 mm 28 Nm