Thickness Of Brake Lining
NOTE:
The thickness of the outer brake linings can be determined without removing the wheels except on 7-Series prior to 1997.
- If necessary, move car until opening for brake lining wear indicator can be seen through rim styling.
- Insert special tool (34 1 260) through rim into opening for brake lining wear indicator.
- Press special tool onto brake lining. Slide ring (1) in direction of arrow as far as it will go and read off measured value. See Fig 1.
- Minimum thickness for all models is stamped in brake disc shell. Wear warning from residual lining thickness is 3 mm. Maximum machining limit per friction ring side is .8 mm. For minimum thickness see BRAKE LINING MINIMUM THICKNESS table.
BRAKE LINING MINIMUM THICKNESS
| Vehicle | Location | Minimum Thickness In MM | ||
|---|---|---|---|---|
| 3-Series | Front | 20.4 | ||
| 3-Series, Solid | Rear | 8.4 | ||
| 3-Series, Ventilated | Rear | 17.4 | ||
| 5-Series Ventilated | Front | 20.4 | ||
| 540i | Front | 28.4 | ||
| 5-Series, Solid | Rear | 8.4 | ||
| 5-Series Ventilated | Rear | 20.4 | ||
| 728i, 730i | Front | 26.4 | ||
| 728, 730i, 740i | Rear | 10.4 | ||
| 735i, 745i | Rear | (1) | ||
| 735i, 745i | Front | (1) | ||
| 740i | Front | 28.4 | ||
| 750i | Front | 30.4 | ||
| 750i | Rear | 18.4 | ||
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