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EnglishWheels and tires -> Tire inflation pressure for your BMW X4 2014-2018
Mobility
Wheels and tires
Wheels and tires
than 1.25 miles/2 km or when the vehicle has
been parked for at least 2 hours.
Vehicle features and options
This chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your vehicle, e. g., due
to the selected options or country versions.
This also applies to safety-related functions
and systems. When using these functions and
systems, the applicable country provisions
must be observed.
The displays of inflation devices may under-
read by up to 0.1 bar/2 psi.
For Flat Tire Monitor: after correcting the tire
inflation pressure, reinitialize the Flat Tire
Monitor.
For Tire Pressure Monitor: perform a reset of
the Tire Pressure Monitor after adjusting tire
pressure to a new value.
Tire inflation pressure specifications
Tire inflation pressure
The tire inflation pressure table, refer to
page 201, contains all tire inflation pressure
specifications for the specified tire sizes at the
ambient temperature. The tire inflation pres‐
sure values apply to tire sizes approved by the
manufacturer of the vehicle for the vehicle
type.
Safety information
The tire characteristics and tire inflation pres‐
sure influence the following:
▷
▷
▷
The service life of the tires.
Road safety.
To identify the correct tire inflation pressure,
please note the following:
Driving comfort.
▷
▷
Tire sizes of your vehicle.
Checking the tire inflation pressure
Maximum permitted driving speed.
WARNING
A tire with low or missing tire inflation
pressure impacts handling, such as steering
and braking response. There is a risk of an ac‐
cident. Regularly check the tire inflation pres‐
sure, and correct it as needed, e.g., twice a
month and before a long trip.◀
Tire inflation pressures up to
100 mph/160 km/h
For speeds of up to 100 mph/160 km/h and for
optimum driving comfort, note the pressure
values in the tire inflation pressure table, refer
to page 201, and adjust as necessary.
Tires have a natural, consistent loss of tire in‐
flation pressure.
Tires heat up while driving, and the tire infla‐
tion pressure increases along with the tire's
temperature. The tire inflation pressure speci‐
fications relate to cold tires or tires at ambient
temperature.
Only check the tire inflation pressure when the
tires are cold. This means after driving no more
200
Wheels and tires
Mobility
Tire size
Pressure specifications
in bar/PSI
Front: 245/40 R 20 2.2 / 32
99 Y XL Std/RSC
-
Rear: 275/35 R 20
102 Y XL Std/RSC
-
2.4 / 35
Front: 245/40 ZR
20 99 Y XL Std
2.2 / 32
-
-
These pressure values can also be found on
the tire inflation pressure label on the driver's
door pillar.
Rear: 275/35 ZR
20 102 Y XL Std
2.4 / 35
-
Do not exceed a speed of 100 mph/160 km/h.
Front: 245/35 R 21 2.4 / 35
96 Y XL RSC
Tire inflation pressure values up to
100 mph/160 km/h
Rear: 275/30 R 21
98 Y XL RSC
-
2.8 / 41
X4 xDrive28i
Emergency wheel: Speed up to a max. of
50 mph / 80 km/h
T 135/80 R 18 104
M
Tire size
Pressure specifications
in bar/PSI
4.2 / 60
Specifications in
bar/PSI with cold
tires
X4 xDrive35i
Tire size
Pressure specifications
in bar/PSI
245/55 R 17 102 H 2.2 / 32
M+S RSC
2.2 / 32
2.4 / 35
Specifications in
bar/PSI with cold
tires
225/60 R 17 99 H 2.2 / 32
M+S RSC
245/50 R 18 100 H
M+S RSC
245/50 R 18 100
H M+S RSC
2.2 / 32
2.4 / 35
2.6 / 38
-
245/50 R 18 100 V
M+S A/S RSC
245/50 R 18 100 V
M+S A/S RSC
245/45 R 19 102 V
M+S XL A/S RSC
245/45 R 19 102 V 2.2 / 32
M+S XL A/S RSC
245/45 R 19 102 V
M+S XL RSC
245/45 R 19 102 V
M+S XL RSC
Front: 245/45 R 19 2.2 / 32
98 W RSC
-
Front: 245/45 R 19 2.2 / 32
98 W RSC
Rear: 275/40 R 19
101 W RSC
-
2.2 / 32
201
Mobility
Wheels and tires
Tire size
Pressure specifications
in bar/PSI
Tire size
Pressure specifications
in bar/PSI
Rear: 275/40 R 19
101 W RSC
-
2.2 / 32
Front: 245/45 R 19 2.2 / 32
98 W RSC
-
Rear: 275/40 R 19
101 W RSC
-
2.4 / 35
Front: 245/40 R 20 2.4 / 35
99 Y XL Std/RSC
-
Rear: 275/35 R 20
102 Y XL Std/RSC
-
2.6 / 38
Front: 245/40 R 20 2.4 / 35
99 Y XL Std/RSC
-
Rear: 275/35 R 20
102 Y XL Std/RSC
-
2.6 /38
Front: 245/40 ZR
20 99 Y XL Std
2,4 / 36
-
-
Rear: 275/35 ZR
20 102 Y XL Std
2.6 / 38
-
Front: 245/40 ZR
20 99 Y XL Std
2.4 / 35
-
-
Rear: 275/35 ZR
20 102 Y XL Std
2.6 / 38
-
Front: 245/35 R 21 2.6 / 38
96 Y XL RSC
Rear: 275/30 R 21
98 Y XL RSC
-
2.8 / 41
Front: 245/35 R 21 2.6 / 38
96 Y XL RSC
Rear: 275/30 R 21
98 Y XL RSC
-
3.0 / 44
Emergency wheel: Speed up to a max. of
50 mph / 80 km/h
T 135/80 R 18 104
M
4.2 / 60
Emergency wheel: Speed up to a max. of
50 mph / 80 km/h
T 135/80 R 18 104
X4 M40i
M
4.2 / 60
Tire size
Pressure specifications
in bar/PSI
Tire inflation pressures at max.
speeds above 100 mph/160 km/h
Specifications in
bar/PSI with cold
tires
WARNING
In order to drive at maximum speeds in
excess of 100 mph/160 km/h, please observe,
and, if necessary, adjust tire pressures for
speeds exceeding 100 mph/160 km/h from the
relevant table on the following pages. Other‐
wise, tire damage and accidents could occur.◀
245/50 R 18 100
H M+S RSC
2.2 / 32
2.4 / 35
2.6 / 38
245/50 R 18 100 V
M+S A/S RSC
245/45 R 19 102 V 2.2 / 32
M+S XL A/S RSC
245/45 R 19 102 V
M+S XL RSC
202
Wheels and tires
Mobility
Tire inflation pressure values over
100 mph/160 km/h
Tire size
Pressure specifications
in bar/PSI
Rear: 275/30 R 21
98 Y XL RSC
-
3.0 / 44
X4 xDrive28i
Tire size
Pressure specifications
in bar/PSI
Emergency wheel: Speed up to a max. of
50 mph / 80 km/h
T 135/80 R 18 104
Specifications in
bar/PSI with cold
tires
M
4.2 / 60
X4 xDrive35i
Tire size
Pressure specifications
in bar/PSI
245/55 R 17 102 H 2.2 / 32
M+S RSC
2.6 / 38
2.8 / 41
Specifications in
bar/PSI with cold
tires
225/60 R 17 99 H 2.4 / 35
M+S RSC
245/50 R 18 100 H
M+S RSC
245/50 R 18 100 V
M+S A/S RSC
245/50 R 18 100
H M+S RSC
2.6 / 38
3.0 / 44
3.2 / 46
245/50 R 18 100 V
M+S A/S RSC
245/45 R 19 102 V 2.6 / 38
M+S XL A/S RSC
3.0 / 44
245/45 R 19 102 V
M+S XL RSC
245/45 R 19 102 V 2.8 / 41
M+S XL A/S RSC
245/45 R 19 102 V
M+S XL RSC
Front: 245/45 R 19 2.4 / 35
98 W RSC
-
Front: 245/45 R 19 2.6 / 38
98 W RSC
-
Rear: 275/40 R 19
101 W RSC
-
2.6 / 38
Rear: 275/40 R 19
101 W RSC
-
2.8 / 41
Front: 245/40 R 20 2.4 / 35
99 Y XL Std/RSC
-
Front: 245/40 R 20 2.6 / 38
99 Y XL Std/RSC
-
Rear: 275/35 R 20
102 Y XL Std/RSC
-
2.6 / 38
Rear: 275/35 R 20
102 Y XL Std/RSC
-
2.8 / 41
-
Front: 245/40 ZR
20 99 Y XL Std
2.4 / 35
-
-
Front: 245/40 ZR
20 99 Y XL Std
2.6 / 38
-
Rear: 275/35 ZR
20 102 Y XL Std
2.6 / 38
-
Rear: 275/35 ZR
20 102 Y XL Std
2.8 / 41
Front: 245/35 R 21 2.6 / 38
96 Y XL RSC
203
Mobility
Wheels and tires
Tire size
Pressure specifications
in bar/PSI
Tire size
Pressure specifications
in bar/PSI
Front: 245/35 R 21 2.8 / 41
96 Y XL RSC
-
Rear: 275/35 ZR
20 102 Y XL Std
-
2.8 / 41
Rear: 275/30 R 21
98 Y XL RSC
-
3.2 / 46
Front: 245/35 R 21 2.8 / 41
96 Y XL RSC
-
Emergency wheel: Speed up to a max. of
Rear: 275/30 R 21
98 Y XL RSC
-
3.2 / 46
50 mph / 80 km/h
T 135/80 R 18 104
M
4.2 / 60
Emergency wheel: Speed up to a max. of
50 mph / 80 km/h
T 135/80 R 18 104
X4 M40i
M
4.2 / 60
Tire size
Pressure specifications
in bar/PSI
Tire identification marks
Specifications in
bar/PSI with cold
tires
Tire size
245/45 R 18 96 Y
245: nominal width in mm
45: aspect ratio in %
245/50 R 18 100
H M+S RSC
2.6 / 38
3.0 / 44
3.2 / 46
R: radial tire code
245/50 R 18 100 V
M+S A/S RSC
18: rim diameter in inches
96: load rating, not for ZR tires
Y: speed rating, before the R on ZR tires
245/45 R 19 102 V 2.8 / 41
M+S XL A/S RSC
245/45 R 19 102 V
M+S XL RSC
Speed letter
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
Front: 245/45 R 19 2.6 / 38
98 W RSC
-
Rear: 275/40 R 19
101 W RSC
-
2.8 / 41
Front: 245/40 R 20 2.6 / 38
99 Y XL Std/RSC
-
Rear: 275/35 R 20
102 Y XL Std/RSC
-
2.8 / 41
-
Tire Identification Number
DOT code: DOT xxxx xxx 2116
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
Front: 245/40 ZR
20 99 Y XL Std
2.6 / 38
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