BMW 228i Owner's Manual download pdf (Page 180)

Tire size Pressure specifications in

bar/PSI

Specifications in

bar/PSI with cold

tires

205/50 R 17 89

H M+S RSC

225/45 R 17 91

H M+S RSC

2.7 / 39 3.1 / 45

225/40 R 18 92

V M+S XL RSC

2.8 / 41 3.2 / 46

Front: 225/40 R

18 88 Y Std

Rear: 245/35 R

18 92 Y XL Std

2.5 / 36

2.9 /42

Front: 225/40

R 18 88 Y RSC

Rear: 245/35

R 18 88 Y RSC

2.5 / 36

2.9 /42

Front: 225/35

R 19 88 Y XL

RSC

Rear: 245/30

R 19 89 Y XL

RSC

2.9 /42

3.2 / 46

Emergency

wheel:

T 125/80 R 17

99 M

Speed up to a max. of

50 mph / 80 km/h

4.2 / 60

Tire identification marks

Tire size

245/45 R 18 96 Y

245: nominal width in mm

45: aspect ratio in %

R: radial tire code

18: rim diameter in inches

96: load rating, not for ZR tires

Y: speed rating, before the R on ZR tires

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

Tire Identification Number

DOT code: DOT xxxx xxx 0115

xxxx: manufacturer code for the tire brand

xxx: tire size and tire design

0115: tire age

Tires with DOT codes meet the guidelines of

the U.S. Department of Transportation.

Tire age

DOT … 0115: the tire was manufactured in the

1st week of 2015.

Recommendation

Regardless of wear and tear, replace tires at

least every 6 years.

Uniform Tire Quality Grading

Quality grades can be found where applicable

on the tire sidewall between tread shoulder

and maximum section width.

For example: Treadwear 200; Traction AA;

Temperature A

DOT Quality Grades

Treadwear

Traction AA A B C

Seite 176

Mobility Wheels and tires

176

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BMW 228i Owner's Manual Page 180

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