MINIの取扱説明書・マニュアル [全148ページ 3.08MB]
ownersmanual2003.pdf
gizport - 2013-09-04
http://libraryofmotoring.info/.../ownersmanual2003.pdf - 3.08MB
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88TIRE REPLACEMENT Tread wear The tread wear grade is a comparative rat-ing 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 would wear one and one-half – 1 γ – 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 govern-ment test surfaces of asphalt and concrete. A tire marked C may have poor traction per-formance.The traction grade assigned to this tire is based on straight-ahead brak-ing traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics. < Temperature The temperature grades are A – the highest – B and C, representing the tire's resistance to the generation of heat and its ability to dissipate heat when tested under con-trolled conditions on a specified indoor lab-oratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to a sudden flat tire. 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 performance on the labora-tory test wheel than the minimum required by law. 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 fai-lure. < Uniform Tire Quality Grading Quality grades can be found where applica-ble on the tire sidewall between tread shoulder and maximum section width. For example:Treadwear 200 Traction AA Temperature ATire age The date on which the tire was manufac-tured is indicated by the code on the side-wall: DOT ... 1202 indicates that the tire was manufactured in Week 12 of the year 2002. The manufacturer of your MINI recom-mends replacing all tires – including the space-saver tire, regardless of actual wear – after 6 years at the latest.Run Flat tiresFor replacement, use only Run Flat tires, as in the event of a flat tire there is no space-saver spare tire.You will recognize Run Flat tires by a circu-lar symbol containing the letters RSC on the side of the tire, see pages 85 , 116 . <ba.book Seite 88 Montag, 5. August 2002 8:09 20
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