BMW 4 Series 2023 Owner's Manual page 290

MOBILITY
Tire size Pressure specifications
in bar/PSI
Specifications in
bar/PSI with cold
tires
225/45 R 18 95 2.6 / 38
H XL M+S
Front: 225/45 R 2.6 / 38
18 95 Y XL
Rear: 255/40 R -
18 99 Y XL
Front: 225/40 R 2.8 / 41
19 93 Y XL
Rear: 255/35 R -
19 96 Y XL
Front: 225/35 R 3.1 / 45
20 90 Y XL
Rear: 255/30 R -
20 92 Y XL
Front: 225/45 R 2.9 / 42
18 95 V XL M+S
Rear: 255/40 R -
18 99 V XL M+S
Front: 225/40 R 2.8 / 41
19 93 H XL M+S
Rear: 255/35 R -
19 96 H XL M+S
Tire marking
Tire size
245/45 R 18 96 Y
245: nominal width in mm
45: cross-sectional relationship in %
R: radial tire code
290
Wheels and tires
2.9 / 42
-
2.6 / 38
-
2.9 / 42
-
3.4 / 49
-
2.9 / 42
-
2.8 / 41
Online Edition for Part no. 01405A7D166 - II/23
18: rim diameter in inches
96: load bearing capacity
Y: speed code letter
ZR tires: reinforced radial tire for speeds ex-
ceeding 150 mph/240 km/h
Maximum tire load
Maximum tire load is the maximum permissi-
ble weight for which the tire is approved.
Locate the maximum tire load on the tire
sidewall and the Gross Axle Weight Rating –
GAWR – on the certification label on the driver
door B-pillar. Divide the tire load by 1.1. It must
be greater than one-half of the vehicle's Gross
Axle Weight Rating – GAWR. Note, front vs.
rear GAWR and tire loads, respectively.
Speed letter
Designation Maximum speed
Q up to 100 mph/160 km/h
R up to 106 mph/170 km/h
S up to 112 mph/180 km/h
T up to 118 mph/190 km/h
H up to 131 mph/210 km/h
V up to 150 mph/240 km/h
W up to 167 mph/270 km/h
Y up to 186 mph/300 km/h
(Y) above 186 mph/300 km/h
Tire Identification Number
DOT code: DOT xxxx xxx 0123
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
0123: tire age
Tires with DOT codes meet the guidelines of
the U.S. Department of Transportation.
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