Mini Countryman owners manual page 211

text version of content this owner's manual page from owners manual to the vehicle Mini Countryman, year of production 2010:

MOBILITY Wheels and tires Tire identification marks DOT Quality Grades Knowledge of the labeling on the side of the tire Tread wear makes it easier to identify and choose the right Traction AA A B C tires. Temperature A B C All passenger car tires must conform to Tire size Federal Safety Requirements in addition to these grades.< e.g. 225/45 R 17 91 V Nominal width in mm Tread wear Aspect ratio in Ξ The tread wear grade is a comparative rating Radial belt construction based on the wear rate of the tire when tested Rim diameter in inches under controlled conditions on a specified gov- Load rating, ernment test course. For example, a tire graded (not on ZR tires) 150 would wear one and one-half (1 γ) times as Speed code letter, well on the government course as a tire graded (before the R on ZR tires) 100. The relative performance of tires depends Speed letter upon the actual conditions of their use, how- ever, and may depart significantly from the Q = up to 100 mph/160km/h norm due to variations in driving habits, service T = up to 118 mph/190 km/h practices and differences in road characteristics H = up to 131 mph/210 km/h and climate. V = up to 150 mph/240 km/h Traction W = up to 167 mph/270km/h The traction grades, from highest to lowest, are Y = up to 186 mph/300 km/h AA, A, B, and C. These grades represent the tire's ability to stop Tire Identification Number on wet pavement, as measured under con- Tires with DOT codes meet the guidelines of the trolled conditions on specified government test US Department of Transportation. surfaces of asphalt and co ncrete. A tire marked C DOT code: may have poor traction performance. The traction grade assigned to this tire is Uniform Tire Quality Grading based on straight-ahead braking traction For instance:DOT xxxx xxx 1012 tests, and does not include acceleration, corner- ing, hydroplaning, or peak traction characteris- Manufacturer's code tics.< for tire make tire size and Temperature tire design The temperature grades are A, the highest, B, Tire age and C, representing the tire's resistance to the Quality grades can be found where applicable generation of heat and its ability to dissipate on the tire sidewall between tread shoulder and heat when tested under controlled conditions maximum section width. For example: on a specified indoor laboratory test wheel. Sus- Tread wear 200 Traction AA tained high temperature can cause the material Temperature A of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire 210 Online Edition for Part no. 01402917368 - © 10/12 BMW AG

owners manual Mini Countryman

owners manual Mini Countryman - year of production: 2010 - Mini Countryman owners manual EN