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Tires And Wheels - Smart Fortwo coupe Operator's Manual

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symbol in the service description.
Example: 245/40 ZR18 97Y.
In this example, "97Y" is the service
description. The letter "Y" designates
the speed rating and the speed
capability of the tire is limited to
186 mph (300 km/h).
Any tire with a speed capability above
R
186 mph (300 km/h) must include a "ZR" in
the size designation AND the service
description must be placed in
parenthesis. Example:
275/40 ZR 18 (99Y). The "(Y)" speed rating
in parenthesis designates the maximum
speed capability of the tire as being
above 186 mph (300 km/h). Consult the tire
manufacturer for the actual maximum
permissible speed of the tire.
All-season and winter tires
Index
Speed rating
up to 100 mph (160 km/h)
15
Q M+S
15
up to 118 mph (190 km/h)
T M+S
15
up to 130 mph (210 km/h)
H M+S
up to 149 mph (240 km/h)
15
V M+S
i
Not all M+S rated tires provide special
winter performance. Make sure the tires
you use show M+S and the mountain/
snowflake marking i on the tire
sidewall. These tires meet specific snow
traction performance requirements of
the Rubber Manufacturers Association
(RMA) and the Rubber Association of
Canada (RAC) and have been designed
specifically for use in snow conditions.
or M+S i for winter tires.
15

Tires and wheels

Load identification
i
For illustration purposes only. Actual
data on tires are specific to each vehicle
and may vary from data shown in above
illustration.
In addition to the tire load rating, special
load identification : may be molded into
the tire sidewall following the letter
designating the tire speed rating B
(
page 138).
Y
No specification given: absence of any text
(like in above example) indicates a
standard load (SL) tire.
XL or Extra Load: designates an extra load
(or reinforced) tire.
Light Load: designates a light load tire.
C, D, E: designates load range associated
with the maximum load a tire can carry at a
specified pressure.
DOT, Tire Identification Number (TIN)
U.S. tire regulations require each new tire
manufacturer or tire retreader to mold a
TIN into or onto a sidewall of each tire
produced.
139
Z

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