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Z4の取扱説明書・マニュアル [全254ページ 8.04MB]

Mobility 199ReferenceAt a glanceControlsDriving tipsCommunicationsNavigationEntertainmentTire ageFor various reasons, such as the development of brittleness, BMW recommends tire replace-ment after no more than 6 years, regardless of the actual wear of the tires.The manufacturing date of tires is contained in the tire coding: DOT ... 3709 means that the tire was manufac-tured in week 37 of 2009.Run-flat tiresThe symbol identifying run- flat tires is a circle with the letters RSC on the sidewall. Run-flat tires comprise a conditionally self-sup-porting tire and a special rim. The reinforce-ment in the sidewalls ensures that the tire can continue to be used su bject to certain restric-tions, even if depressurized.For information on continuing to drive with a flat tire, refer to Indication of a flat tire, page 81.New wheels and tiresHave new wheels and tires installed only by your BMW center or tire shop that works according to BMW repair procedures with correspondingly trai ned personnel. If this work is not carried out properly, there is a dan-ger of subsequent dama ge and related safety hazards. Make sure th at the new wheels are balanced.<Retreaded tiresBMW recommends that you do not use retreaded tires, since driving safety may be impaired. The causes for this include poten-tially different tire casi ng structures and often wide variations in tire ag e, which can result in a limited service life. <Correct wheels and tiresWhen mounting new tires or changing over from summer to winter tires and vice versa, mount run-flat tires for your own safety. In the event of a flat, no spare wheel is available. Your BMW center will be glad to advise you.BMW recommends that you use only wheel and tire combinations that BMW has tested and approved for your particular vehicle. Variations in factors such as manufac-turing tolerances mean that even wheels and tires with identical official size ratings could actually have different dimensions, which could lead to body contact an d thus to severe acci-dents. If non-approved wheels and tires are used, BMW cannot evaluate their suitability, and therefore cannot guarantee their driving safety.<You can inquire about the right wheel/tire com-bination at your BMW center.The correct combination of wheels and tires is also necessary to ensure reliable operation of various vehicle systems such as ABS, DSC or TPM.To maintain good handling and vehicle response, use only tires of a single brand and tread configuration. After a tire has been dam-aged, mount the previous wheel and tire combi-nation again as soon as possible.Wheels with Tire Pressure Monitor TPM electronicsWhen mounting new tires or changing over from summer to winter tires, or vice versa, only use wheels with TPM electronics; otherwise, the Tire Pressure Monitor may not be able to detect a puncture, refer to page82. Your BMW center will be glad to advise you.

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