BMW 5 E60 E61 owners manual page 175

text version of content this owner's manual page from owners manual to the vehicle BMW 5 E60, year of production 2003 - 2010:

dently of the fact that tires can reach an age Temperature of 10 years. The temperature grades are A – the Uniform Tire Quality Grading highest – B, and C, representing the tire's resistance to the generation of heat and its At a glance Quality grades can be found where appli- ability to dissipate heat when tested under cable on the tire sidewall between tread controlled conditions on a specified indoor shoulder and maximum section width. For laboratory test wheel. example: Sustained high temperature can cause the Treadwear 200 Traction AA material of the tire to degenerate and Temperature A reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C Controls DOT Quality Grades corresponds to a level of performance Treadwear which all passenger car tires must meet Traction AA A B C under the Federal Motor Vehicle Safety Temperature A B C Standard No. 109. Grades B and A repre- sent higher levels of performance on the All passenger car tires must conform laboratory test wheel than the minimum to Federal Safety Requirements in required by law. addition to these grades.< The temperature grade for this tire is Driving tips Treadwear established for a tire that is properly inflated and not overloaded. Excessive The treadwear grade is a comparative rat- speed, underinflation, or excessive load- ing based on the wear rate of the tire when ing, either separately or in combination, tested under controlled conditions on a can cause heat buildup and possible tire specified government test course. failure.< For example, a tire graded 150 would wear Navigation one and one-half (1 g) times as well on the RSC – Run-flat tires government course as a tire graded 100. You will recognize run-flat tires by a circular The relative performance of tires depends symbol containing the letters RSC on the upon the actual conditions of their use, side of the tire, refer to page 175. however, and may depart significantly from the norm due to variations in driving habits, M+S service practices and differences in road Entertainment characteristics and climate. Winter and all-season tires. These have better winter properties than Traction summer tires. The traction grades, from highest to lowest, are AA, A, B, and C. Tire condition Those grades represent the tire's ability to stop on wet pavement as measured under Inspect your tires frequently for treadwear, Communications controlled conditions on specified govern- signs of damage and for foreign objects ment test surfaces of asphalt and concrete. lodged in the tread. Check the tread depth. A tire marked C may have poor traction performance. Tire tread The traction grade assigned to this The tread depth should not drop below tire is based on straight-ahead brak- 0.12 in/3 mm, although, for example, Euro- ing traction tests, and does not include pean legislation only specifies a minimum Mobility acceleration, cornering, hydroplaning, or tread depth of 0.063 in/1.6 mm. At tread peak traction characteristics.< depths below 0.12 in/3 mm there is an increased risk of high-speed hydroplaning, 173 Online Edition for Part No. 01 41 0 157 647 - © 07/03 BMW AG Reference

owners manual BMW 5 E60

owners manual BMW 5 E60 - year of production: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 - BMW 5 E60 E61 owners manual EN