VW Jetta VI 6 owners manual page 185

text version of content this owner's manual page from owners manual to the vehicle VW Jetta, year of production 2010:

UTQG classification ¤ Please first read and note the introductory information and heed the WARNINGS Uniform Tire Quality Grading (UTQG): Quality grades can be found where applicable on the tire side- wall between the tread shoulder and maximum section width. Example: x Treadwear (number) x Traction: AA, A, B or C x Temperature: A, B or C For example: Treadwear 200, Traction AA, Temperature A. 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 (Treadwear-value 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 may depart 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. A tire marked C may have poor traction performance ⇒ . Temperature The temperature grades are A (the highest), B, and C representing the tire's resistance to the genera- tion 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 Vehicle Safety Standard No. 109. Grades B and A represent higher levels of perfor- mance on the laboratory test wheel than the minimum required by law ⇒ . WARNING 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. 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.

owners manual VW Jetta

owners manual VW Jetta - year of production: 2010 - VW Jetta VI 6 owners manual EN