IndexIndex Speed rSpeed ratingating
ZR...Y1up to 186 mph (300 km/h)
ZR...(..Y)1over 186 mph (300 km/h)
ZR1over 149 mph (240 km/h)
RSpecifying the speed rating as the "ZR" index
in tire code 4is optional for tires up to
186 mph (300 km/h).
RIf your tire code 4includes "ZR" and there is
no speed rating 7, nd out what the maxi-
mum speed is from the tire manufacturer.
RIf load-bearing index 6and speed rating 7
are in brackets, the maximum speed rating of
your tire is above 186 mph (300 km/h). To
nd out the maximum speed, ask the tire man-
ufacturer.
All-wAll-weateather tirher tires and wintes and winter tirer tireses
IndexIndex Speed rSpeed ratingating
Q M+S2up to 100 mph (160 km/h)
T M+S2up to 118 mph (190 km/h)
H M+S2up to 130 mph (210 km/h)
V M+S2up to 149 mph (240 km/h)
Winter tires bear theisnowake symbol and
fulll therequirements of theRubber Manufactur-
ers Association (RMA) and theRubber Association
of Canada (RAC) regarding the tire traction on
snow.
Load indeLoad indexx88::
RNo specication given: standard load (SL) tire
R"XL" or "Extra Load": extra load tire or rein-
forced tire
R"Light Load": light load tire
R"C", "D", "E": a load range that depends on the
maximum load that the tire can carry at a cer-
tain pressure
DenitionDenition of tof tererms fms for tiror tires and loadinges and loading
TTirire se strtructuructure and ce and charharactactererisistics:tics: describes the
number of layers or the number of rubber-coated
belts in the tire contact surface and the tire wall.
These are made of steel, nylon, polyester and
other materials.
Bar:Bar: metric unit for tire pressure. 14.5038 pounds
per square inch (psi) and 100 kilopascal (kPa) is
the equivalent of one bar.
DODOT (DeparT (Department of Trtment of Transportansportation):ation): DOT-marked
tires fulll therequirements of the
US Department of Transportation.
AvAvereragage we weight of teight of the vhe vehicle occupants:ehicle occupants: the
number of vehicle occupants for which thevehicle
is designed, multiplied by 150 lb (68 kg).
UUnifnifororm Tm Tirire Quality Gre Quality Grading Stading Standarandards:ds: a uniform
standard to grade thequality of tires with regard
1"ZR" stated in the tire code.
2Or "M+Si"for winter tires.
Wheels and tires 397397
