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At a glanceControlsDriving tipsCommunications NavigationEntertainmentMobilityReference
171
BMW 745i, 745Li
Tire condition
Tire tread – Tire damage
Inspect your tires frequently for tread wear,
signs of damage and for foreign objects
lodged in the tread. Check the tread depth.
Tread depth should not be allowed to go
below 0.126 in (3 mm), even though the
legally specified minimum tread depth is
only 0.063 in (1.6 mm). The locations of the
tread wear indicators are indicated by the
letters TWI at various points on the side of
the tire; when the tread wears to a depth of
0.063 in (1.6 mm), the wear indicators
appear to warn you that the tread has worn
to the minimum legal level. At tread depths
below 0.126 in (3 mm) there is an increased
risk of aquaplaning, even when only small
amounts of water are present on the road
surface.
Never attempt to continue driving on
a flat tire. Because a flat tire will seri-
ously impair your vehicle's handling and
braking response, attempts to drive on a
flat tire can lead to loss of control over the
vehicle.
To avoid loading the tires beyond their
approved carrying capacity, never overload
the vehicle. Overloading can lead to over-
heating and increases the rate at which
damage develops inside the tires. The ulti-
mate result can assume the form of a
sudden air loss.
Unusual vibrations during vehicle opera-
tion, of the kind that can be caused by
contact with curbs, etc., may indicate that
a wheel, tire or other vehicle component is
damaged. These kinds of problems may
also be signalled by other changes in
vehicle response, such as a strong
tendency to pull to the left or right. Should
this occur, respond by immediately
reducing your speed. Carefully proceed or
have your vehicle towed to the nearest
BMW center or tire dealer to have the
wheels and tires inspected.
Tire damage, extending to sudden and
complete loss of pressure in extreme
cases, can pose a potentially lethal safety
hazard for the vehicle's occupants and
other road users alike.<
Tire specifications
Pressure specifications in
psi/kPa
245/55 R 17, including M+S
245/50 R 18, including M+S
32/220 35/240 35/240 42/290
Front: 245/45 R 19 32/220 – 35/240 –
Rear: 275/40 R 19 - 35/240 – 42/290
Front: 245/40 R 20 32/220 – 35/240 –
Rear: 275/35 R 20 – 35/240 – 42/290
Online Edition for Part No. 01400156097 – © 10/01 BMW AG
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