1 - General information
17
DOT Quality Grade
Tires type
Tread wear
Traction
Temperature
Pirelli P Zero Rosso
220 (front)
160 (rear)
AA
A
Bridgestone Potenza
RE050A
140
A
A
Goodyear Regol F1
280
AA
A
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
and may differ significantly from the
norm due to variations 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
“. Those grades
represent the tire’s ability to stop on wet
pavement as measured under controlled
conditions on specified government
test surfaces of asphalt and concrete.
Tires marked “
C
“ have poor traction
- performance.
The traction grade assigned to
this tire is based on straight-ahead
braking traction tests, and does not include
acceleration, cornering, hydroplaning, or
peak traction characteristics.
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 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.
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, under inflation, or excessive loading,
either separately or in combination, can
cause heat buildup and possible tire failure.
Содержание 2006 F430 Spider
Страница 1: ...U S Version Model Year 2006 Owner s Manual ...
Страница 2: ...2 ...
Страница 6: ......
Страница 8: ...8 ...
Страница 20: ...20 ...
Страница 82: ...82 ...
Страница 116: ...116 ...
Страница 150: ...150 ...
Страница 151: ...7 Table of contents 151 ...