Minimum tread depth

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.
See also:
ConnectedDrive or BMW Assist
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The 135i's turbocharged inline-six makes 300 horsepower and 300 pounds-feet
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