Volvo 2003 S40, Руководство по эксплуатации и уходу

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Tire rotation
Volvo recommends rotating the tires every 7,500 miles (12,000 km) and 15,000 miles(24,000 km). Tires should be
rotated front-to-back/back-to-front only. Tires must maintain the same direction of rotation throughout their lifetime,
and should never be rotated from one side of the vehicle to the other.
pg. 83 Wheels and tires
Uniform tire quality grading
ALL PASSENGER CAR TIRES MUST CONFORM TO FEDERAL SAFETY REQUIREMENTS IN
ADDITION TO THESE GRADES
TREADWEAR
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions
on a specified government test course. For example, a tire graded 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 significantly from the norm due to variation in driving habits,
service 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 surfaces of asphalt and concrete. A tire marked C may have poor traction performance.
WARNING!
The traction grade assigned to this tire is based on braking (straight-ahead) traction tests and does not reflect
cornering (turning) traction.
TEMPERATURE
The temperature grades are AA (the highest), A, 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 level of performance which all passenger car
tires must meet under the Federal 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.
UNIFORM TIRE QUALITY GRADING
LOCATING THE GRADE
Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width.
Treadware 200 Traction AA Temperature A
WARNING!
The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive
speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible
tire failure.
pg. 84 Spare tire