Summer tires
Do not drive with a tire tread depth of less than 0.12 in/3 mm.
There is an increased danger of hydroplaning if the tire tread depth is less than 0.12 in/3 mm.
Winter tires
Do not drive with a tire tread depth of less than 0.16 in/4 mm.
Below a tread depth of 0.16 in/4 mm, tires are less suitable for winter operation.
Minimum tread depth
Wear indicators are distributed around the tire's circumference and have the legally required minimum height of 0.063 in/1.6 mm.
They are marked on the side of the tire with TWI, Tread Wear Indicator.
BMW X3 Service & Repair Manual > Brake booster: Removing and installing or replacing brake booster
Necessary preliminary work:
Read and comply with GENERAL INFORMATION.
Remove left footwell trim .
Remove BRAKE MASTER CYLINDER.
Remove WIPER MOUNTING BRACKET .
Detach retaining clip (1) on brake pedal.
Pull out locking pin.
Unscrew nuts (2).
Installation note:
Replace self-lo ...