06 Wheels and tires
Uniform Tire Quality Grading
06
248
Quality grading information
ALL PASSENGER VEHICLE TIRES MUST
CONFORM TO FEDERAL SAFETY
REQUIREMENTS IN ADDITION TO THESE
GRADES
Quality grades can be found, where appli-
cable, on the tire sidewall between the tread
shoulder and maximum section width. For
example:
Treadwear 200 Traction AA Temperature A
TREADWEAR
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course. For example, a tire gra-
ded 150 would wear one and one half (1 1/2)
times as well on the government course as a
tire graded 100. The relative performance of
tires depends upon the actual conditions of
their use, however, and many depart signifi-
cantly from the norm due to variation in driving
habits, maintenance practices and differences
in road characteristics and climate.
TRACTION
The traction grades, from highest to lowest, are
AA, A, B, and C, as measured under controlled
conditions on specified government test sur-
faces of asphalt and concrete. A tire marked C
may have poor traction performance. The trac-
tion grade assigned to this tire is based on
braking (straight-ahead) traction tests and is
not a measure of cornering (turning) traction.
WARNING
The traction grade assigned to this tire is
based on braking (straight-ahead) traction
tests and is not a measure of cornering
(turning) traction.
TEMPERATURE
The temperature grades are A (the highest), B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions
on a specified indoor laboratory test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and reduce
tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds
to a minimum level of performance that all pas-
senger vehicle tires must meet under the Fed-
eral Motor Safety Standard No. 109. Grades B
and A represent higher levels of performance
on the laboratory test wheel than the minimum
required by law.
WARNING
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, under-
inflation, or excessive loading, either sepa-
rately or in combination, can cause heat
buildup and tire failure.
Summary of Contents for 2010 XC60
Page 1: ...VOLVO XC60 Owner s Manual Web Edition ...
Page 2: ......
Page 7: ...Contents 7 09 09 Index Index 316 ...
Page 15: ...SAFETY ...
Page 53: ...01 Safety 01 53 ...
Page 54: ...54 Remote key and key blade 56 Keyless drive 63 Locks 66 Alarm 69 ...
Page 55: ...LOCKS AND ALARM ...
Page 71: ...02 Locks and alarm 02 71 ...
Page 73: ...YOUR DRIVING ENVIRONMENT ...
Page 74: ...03 Your driving environment Instruments and controls 03 74 Instrument overview ...
Page 123: ...03 Your driving environment 03 123 ...
Page 125: ...COMFORT AND DRIVING PLEASURE ...
Page 205: ...04 Comfort and driving pleasure Passenger compartment convenience 04 205 Storage spaces ...
Page 209: ...04 Comfort and driving pleasure 04 209 ...
Page 211: ...DURING YOUR TRIP ...
Page 233: ...05 During your trip 05 233 ...
Page 235: ...WHEELS AND TIRES ...
Page 263: ...06 Wheels and tires 06 263 ...
Page 265: ...MAINTENANCE AND SPECIFICATIONS ...
Page 287: ...07 Maintenance and specifications Fuses 07 287 Engine compartment ...
Page 299: ...07 Maintenance and specifications 07 299 ...
Page 301: ...SPECIFICATIONS ...
Page 302: ...08 Specifications Label information 08 302 Location of labels ...
Page 315: ...08 Specifications 08 315 ...
Page 324: ...09 Index 09 324 ...
Page 325: ......
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