Porsche Panamera 970 owners manual page 283

text version of content this owner's manual page from owners manual to the vehicle Porsche Panamera, year of production 2009:

Treadwear Temperature A, B, C Tire pressures The treadwear grade is a comparative rating The temperature grades are A (the highest), B and Danger! based on the wear rate of the tire when tested C, representing the tire's resistance to the under controlled conditions on a specific generation of heat and it s ability to dissipate heat Risk of accident. government test course. For example, a tire when tested under controlled conditions on a Risk of serious personal injury or death. graded 150 would wear one and a half (1-1/2) specified indoor laboratory test wheel.Driving the vehicle with low tire pressure times as well on the government course as a tire Sustained high temperatures can cause the increases risk of a tire failure and resulting graded 100. The relative performance of tires material of the tire to degenerate and reduce tire loss of control. Furthermore, low tire depends upon the actual conditions of their use, life, and excessive temperature can lead to pressure increases rate of wear of the however, and may depart significantly from the sudden tire failure.affected tires and cause damage. norm due to variations in driving habits, service The grade C corresponds to a level of f Always use an accurate tire pressure gage practices and differences in road characteristics performance which all passenger car tires must when checking inflation pressures. and climate. meet under the Federal Motor Vehicle Safety Standard No. 109. f Do not exceed the maximum tire pressure Traction AA, A, B, C Grades B and A represent higher levels of listed on the tire sidewall. (Also refer to The traction grades, from highest to lowest, are performance on the laboratory test wheel than the ”Technical data“). AA, A, B, and C and they represent the tire's ability minimum required by law.f Please see the chapter “TIRE PRESSURE to stop on wet pavement as measured under PLATE” on page 283. controlled conditions on specified government Warning!f Cold tire inflation pressure means: all tires test surfaces of asphalt and concrete. A tire The temperature grade for this tire is marked C may have poor traction performance.established for a tire that is properly inflated must be cold, ambient temperature maximum and not overloaded. Excessive speed, 68 °F (20 °C), when adjusting the inflation Warning! underinflation, or excessive loading, either pressure. Avoid sunlight striking the tires The traction grade assigned to this is based separately or in combination, can cause heat before measuring cold pressures, since the on braking (straight-ahead) traction tests buildup and possible tire failure, resulting pressures would rise from temperature and does not include cornering (turned) loss of control, leading to serious personal influence. traction, acceleration, hydroplaning or peak injury or death. traction characteristics. Minor Repairs 281

owners manual Porsche Panamera

owners manual Porsche Panamera - year of production: 2009 - Porsche Panamera 970 owners manual EN