General information | |
| Brake system | With double diagonal splitting of contours, with disc brakes on all wheels |
| Pressure in brake lines, atm | |
| 28÷33 |
| 75÷90 |
| Maximum allowable pressure drop for 2 min | 8% |
| Maximum allowable thickness difference | 0.01 |
| Roughness (Ra) of the working surfaces of brake discs and parking brake drum, µm | 0.5÷3.5 |
| Thickness of brake pad linings when the wear alarm is activated, mm | 3.0 |
| Minimum thickness of friction linings of parking brake, mm | 1.5 |
| Parking brake drum diameter, mm | 180 |
| Radial runout of the working surface of the parking brake drum, mm | 0.1 |
Front wheel brakes | |
| Brake disc outer diameter, mm | |
| Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL | 316 |
| Models 740i/iL | 324 |
| Models 740d, 750i/iL | 334 |
| Minimum thickness of brake discs, mm | |
| Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL | 26.4 |
| Models 740i/iL | 28.4 |
| Models 740d, 750i/iL | 30.4 |
Rear wheel brakes | |
| Axial runout of the working surface of the brake disc (at largest diameter), mm | |
| With the disk installed | 0.2 |
| With the disk removed | 0.04 |
| Brake disc outer diameter, mm | |
| Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL, 740i/iL | 324 |
| Models 740d, 750i/iL | 328 |
| Minimum thickness of brake discs, mm | |
| Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL, 740i/iL | 10.4 |
| Models 740d, 750i/iL | 18.4 |
Tightening force of threaded connections, Nm | |
| Brake drum/disc to wheel hub | 16 |
| Caliper (front) to steering knuckle | 110 |
| Caliper (rear) to trailing arm/wheel bearing support | 67 |
| Caliper guide pin | 30 |
| Wheel brake cylinder to rear wheel brake shoe guide | 10 |
| Rear Brake Shoe Guide to Trailing Arm/Wheel Bearing Support | 65 |
| Brake pipe and hose couplings | 18 |
| Brake hose to caliper | 19 |
| Master cylinder to brake booster | 26 |
| ABS control unit to hydraulic modulator | 3 |
| Pressure sensor for hydraulic modulator | 20 |
| Wheel sensor to swivel support/wheel bearing support | 9 |
| Lateral acceleration sensor to the body | 8.6 |