BMW X3 E83 owners manual page 91

text version of content this owner's manual page from owners manual to the vehicle BMW X3 E83, year of production 2003 - 2010:

resistance to the generation of heat and its safety you should always have such tires ability to dissipate heat when tested under replaced. 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 At a glance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A repre- sent higher levels of performance on the Wear indicators at the tread-groove base, laboratory test wheel than the minimum refer to arrow, are distributed over the tire's required by law. circumference and are marked on the tire The temperature grade for this tire is sidewall with TWI – Tread Wear Indicator. established for a tire that is properly At a tread depth of 0.063 in/1.6 mm these inflated and not overloaded. Excessive indicators, signal that the tires have speed, underinflation, or excessive load- reached the legally permissible wear limit. ing, either separately or in combination, Controls can cause heat buildup and possible tire Tire damage failure.< Unusual vibrations encountered dur- M+S ing normal vehicle operation can indi- cate tire failure or some other vehicle Winter and all-season tires. defect. This can, for example, be caused by These have better winter properties than driving over curbs. These kinds of prob- summer tires. lems may also be signaled by other changes in vehicle response, such as a strong tendency to pull to the left or right. Tire condition Should this occur, respond by immediately Inspect your tires frequently for treadwear, reducing your speed. Proceed carefully to Driving tips signs of damage and for foreign objects the nearest BMW Sports Activity Vehicle lodged in the tread. Check the tread pat- Center or professional tire center, or have tern depth. the vehicle towed in to have it, its wheels and tires inspected. Tire tread Tire damage, extending to sudden and The tread depth should not drop below complete loss of pressure in extreme 0.12 in/3 mm, although, for example, Euro- cases, can pose a potentially lethal safety pean legislation only specifies a minimum hazard for the vehicle's occupants and tread depth of 0.063 in/1.6 mm. At tread other road users alike.< depths below 0.12 in/3 mm, there is an Mobility increased risk of high-speed hydroplaning, Replacing wheels/tires even when only small amounts of water are present on the road surface. Unprofessional attempts by laymen to As winter tires display a noticeable loss in service tires can lead to damage and their ability to cope with cold-weather driv-accidents. ing conditions once the tread wears to Have this work performed by skilled pro- below 0.16 in/4 mm, to ensure continued fessionals only. All BMW Sports Activity Vehicle Centers will be happy to help you 89 Online Edition for Part No. 01 41 0 157 631 - © 07/03 BMW AG Reference

owners manual BMW X3 E83

owners manual BMW X3 E83 - year of production: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 - BMW X3 E83 owners manual EN