Subaru Impreza II 2 GD owners manual page 353

text version of content this owner's manual page from owners manual to the vehicle Subaru Impreza, year of production 2001 - 2007:

A1900BE-A.book Page 12 Friday, June 17, 2005 5:40 PM 13-12 Consumer information and Reporting safety defects Uniform tire quality grading Treadwear standards The treadwear grade is a comparativeThe traction grade assigned to rating based on the wear rate of the this tire is based on straight- This information indicates the relative tire when tested under controlled con-ahead braking traction tests, performance of passenger car tires inditions on a specified government testand does not include accelera- the area of treadwear, traction, andcourse. tion, cornering, hydroplaning, or temperature resistance. This is to aidFor example, a tire graded 150 wouldpeak traction characteristics. the consumer in making an informed wear one and one-half (1-1/2) times choice in the purchase of tires. as well on the government course as Quality grades can be found where a tire graded 100. The relative perfor-Temperature A, B, C applicable on the tire sidewall be- mance of tires depends upon the ac- The temperature grades are A (the tween tread shoulder and maximum tual conditions of their use, however, highest), B, and C, representing the section width. For example: and may depart significantly from thetire’s resistance to the generation of Treadwear 200 Traction AA Tem- norm due to variations in driving hab- heat and its abilityto dis sipate heat perature A its, service practices and differenceswhen tested under controlled condi- in road characteristics and climate.tions on a specified indoor laboratory The quality grades apply to new pneu- test wheel. Sustained high tempera- matic tires for use on passenger cars.Traction AA, A, B, C ture can cause the material of the tire However, they do not apply to deep to degenerate and reduce tire life, and The traction grades, from highest to tread, winter type snow tires, space- excessive temperature can lead to lowest, are AA, A, B and C. Those saver or temporary use spare tires, sudden tire failure. The grade C corre- tires with nominal rim diameters of 12grades represent the tire’s ability to sponds to a level of performance inches or less, or to some limited pro-stop on wet pavement as measured duction tires. under controlled conditions on speci- which all passenger car tires must meet under the Federal Motor Vehicle fied government test surfaces of as- Safety Standards No. 109. Grades B phalt and concrete. A tire marked C All passenger car tires must confirm and A represent higher levels of per- may have poor traction performance. to Federal Safety Requirements in formance on the laboratory test wheel addition to these grades. than the minimum required by law.

owners manual Subaru Impreza

owners manual Subaru Impreza - year of production: 2001, 2002, 2003, 2004, 2005, 2006, 2007 - Subaru Impreza II 2 GD owners manual EN