Mercedes-Benz E-Class Coupe 2022 Operator's Manual page 323

F F irs irst le t lett tter(s) er(s) 1 1 : :
Without: passenger vehicle tires according to
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European manufacturing standards.
"P": passenger vehicle tires according to US
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manufacturing standards.
"LT": light truck tires according to US manu-
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facturing standards.
"T": compact emergency spare wheels with
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high tire pressure that are only designed for
temporary use in an emergency.
Aspect ratio Aspect r atio 3 3 : :
Ratio between tire height and tire width in percent
(tire height divided by tire width).
T T ir ire code e code 4 4 (tire type): (tir e type):
"R" radial tire
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"D": bias ply tire
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"B": bias belted tires
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"ZR": radial tire with a maximum speed above
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149 mph (240 km/h) (optional)
Rim diameter er Rim diamet 5 5 : :
The diameter of the bead seat (not the diameter
of the rim ange). The rim diameter is speci ed in
inches (in).
Load-bearing inde Load-bear ing index x 6 6 : :
Numerical code that speci es the maximum load-
bearing capacity of a tire (e.g. "91" corresponds
to 1356 lbs (615 kg)).
The load-bearing capacity of the tire must be at
least half the gross axle weight rating of your vehi-
cle. Do not overload the tires by exceeding the
speci ed load limit.
See also:
Maximum permissible load on the Tire and
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Loading Information placard (
/
Maximum tire load ( page 319)
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Load index
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Speed r Speed rating ating 7 7 : :
Speci es the approved maximum speed of the
tire.
%
An electronic speed limiter prevents your
vehicle from exceeding a speed of 130 mph
(210 km/h).
Make sure that your tires have the required speed
rating. You can obtain information on the required
speed rating from an authorized Mercedes-Benz
Center.
Summer tires es Summer tir
Index Index Speed r Speed rating
Q up to 100 mph (160 km/h)
R up to 106 mph (170 km/h)
S up to 112 mph (180 km/h)
page 312)
T up to 118 mph (190 km/h)
H up to 130 mph (210 km/h)
V up to 149 mph (240 km/h)
W up to 168 mph (270 km/h)
Y up to 186 mph (300 km/h)
Wheels and tires 321 321
ating