BMW X5 2018 Owner's Manual page 239

Tire size
Front:
275/40 R 20 106
W XL RSC
Rear: 315/35 R 20
110 W XL RSC
Front:
285/35 R 21 105 Y
XL RSC
Rear: 325/30 R 21
108 Y XL RSC
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
Maximum tire load
Maximum tire load is the maximum permissible
weight for which the tire is approved.
Locate the maximum tire load on the tire side‐
wall and the Gross Axle Weight Rating – GAWR
– on the certification label on the driver's door
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
Q = up to 100 mph/160 km/h
R = up to 106 mph/170 km/h
Pressure specifications
in bar/PSI
2.9 / 42 -
- 3.4 / 49
2.9 / 42 -
- 3.4 / 49
Online Edition for Part no. 01402983801 - X/17
Wheels and tires
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 3817
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
3817: tire age
Tires with DOT codes meet the guidelines of
the U.S. Department of Transportation.
Tire age
Recommendation
Regardless of the tire tread, replace tires at
least every 6 years.
Manufacture date
You can find the manufacture date of the tire
on the tire's sidewall.
Designation
DOT ... 3817
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder
and maximum section width.
E.g.: Treadwear 200; Traction AA; Tempera‐
ture A
DOT Quality Grades
Treadwear
Traction AA A B C
Temperature A B C
Mobility
Manufacture date
38th week, 2017
239