Wheels and tires
172
545i
Tire identification marks
Knowledge of the labeling on the side of
the tire makes it easier to identify and
choose the right tires.
Tire size
Speed letter
Q = up to 100 mph160 km/h
T = up to 118 mph190 km/h
H = up to 131 mph210 km/h
V = up to 150 mph/240 km/hW = up to 167 mph/270 km/h
Y = up to 186 mph/300 km/h
Tire Identification Number
Tires with DOT codes meet the guidelines
of the U.S. Department of Transport.
DOT code:
Tire age
The date of manufacture of the tires is
marked on the tires themselves:
DOT ... 3603 means that the tire was made
in the 36th week of 2003.
BMW recommends that you replace all
tires after 6 years at the latest, indepen-
Tire size Pressure specifications in psi/kPa
All pressure specifications in
the table are indicated in psi/
kilopascal with cold tires.
Cold = ambient temperature
225/50 R 17 94 V M+S
225/50 R 17 94 W
245/40 R 18 93 Y
225/50 R 17 94 Q,T,H M+S32/220 38/260 38/260 45/310
245/45 R 17 95 W
245/45 R 17 95 V M+S29/200 35/240 35/240 42/290
Front: 245/40 R 18 93 Y 32/220 - 38/260 -
Rear: 275/35 R 18 95 Y - 35/240 - 42/290
Front: 245/35 R 19 89 Y 32/220 - 38/260 -
Rear: 275/30 R 19 92 Y - 35/240 - 42/290
Compact wheel:
T 135/80 R 17 102 M61/420
More details on the permitted load and weights can be found on page 200.
e.g.
Nominal width
in mm
Aspect ratio in X
Radial type
Rim diameter in inches
Load rating
(not on ZR tires)
Speed rating
(before R on ZR tires)205/60 R1591W
e.g.
Manufacturer code
for tire make
Tire size and
tire design
Tire ageDOT xxxx xxx 3602
