Infiniti Q45 III 3 owners manual page 316

text version of content this owner's manual page from owners manual to the vehicle Infiniti Q45, year of production 2001 - 2006:

UNIFORM TIRE QUALITY GRADING DOT (Department Of Transportation) Qual-pavement as measured under controlledmance on laboratory test wheels than the ity Grades: All passenger car tires must minimum required by law. conditions on specified government test conform to federal safety requirements insurfaces of asphalt and concrete. A tire addition to these grades.marked C may have poor traction perfor-WARNING Quality grades can be found where appli-mance. cable on the tire sidewall between treadWARNING The temperature grade for this tire is es- shoulder and maximum section width. For tablished for a tire that is properly inflated example: and not overloaded. Excessive speed, under Treadwear 200 Traction AA Temperature AThe traction grade assigned to your vehicleinflation, or excessive loading, either sepa- tires is based on straight-ahead brakingrately or in combination, can cause heat Treadwear traction tests and does not include accel-build-up and possible tire failure. Treadwear grade is a comparative ratingeration, cornering, hydroplaning or peak based on tire wear rate when testedtraction characteristics. under controlled conditions on specifiedTemperature A, B and C government test courses. For example, a tire graded 150 would wear one and a Temperature grades are A (the highest), half (1-1/2) times as well on the govern-B, and C. They represent a tire’s resis- ment course as a tire graded 100. How- tance to heat build-up, and its ability to ever, relative tire performance depends dissipate heat when tested under con- on actual driving conditions, and may trolled conditions on a specified indoor vary significantly from the norm due to variations in driving habits, service prac-laboratory test wheel. Sustained high tices and differences in road characteris-temperature can cause tire material to de- tics and climate. generate, reducing tire life. Excessive temperatures can lead to sudden tire fail- Traction AA, A, B and C ure. Grade C corresponds to a perfor- mance level which all passenger car tires The traction grades from highest to must meet under the Federal Motor Ve- lowest are AA, A, B and C. Those gradeshicle Safety Standard No. 109. Grades A represent the tire’s ability to stop on wetand B represent higher levels of perfor- 9-22 Technical and consumer information Z04.4.16/F50-D X

owners manual Infiniti Q45

owners manual Infiniti Q45 - year of production: 2001, 2002, 2003, 2004, 2005, 2006 - Infiniti Q45 III 3 owners manual EN