BMW i8 owners manual page 181

text version of content this owner's manual page from owners manual to the vehicle BMW i8, year of production 2014:

Seite 165 Wheels and tires Mobility 18: rim diameter in inches Temperature A B C 96: load rating, not for ZR tires All passenger car tires must conform to Fed‐ eral Safety Requirements in addition to these Y: speed rating, before the R on ZR tires grades. Speed letter Treadwear Q = up to 100 mph, 160 km/h The treadwear grade is a comparative rating R = up to 106 mph, 170 km/h based on the wear rate of the tire when tested S = up to 112 mph, 180 km/h under controlled conditions on a specified gov‐ T = up to 118 mph, 190 km/h ernment test course. For example, a tire graded 150 would wear one and one-half, 1 g, H = up to 131 mph, 210 km/h times as well on the government course as a V = up to 150 mph, 240 km/h tire graded 100. The relative performance of W = up to 167 mph, 270 km/h tires depends upon the actual conditions of their use, however, and may depart signifi‐ Y = up to 186 mph, 300 km/h cantly from the norm due to variations in driv‐ ing habits, service practices and differences in Tire Identification Number road characteristics and climate. DOT code: DOT xxxx xxx 0115 xxxx: manufacturer code for the tire brand Traction xxx: tire size and tire design The traction grades, from highest to lowest, 0115: tire age are AA, A, B, and C. Tires with DOT codes meet the guidelines of Those grades represent the tire's ability to the U.S. Department of Transportation. stop on wet pavement as measured under controlled conditions on specified government Tire age test surfaces of asphalt and concrete. A tire marked C may have poor traction performance. DOT … 0115: the tire was manufactured in the 1st week of 2015. The traction grade assigned to this tire is based on straight-ahead braking traction tests, Recommendation and does not include acceleration, cornering, hydroplaning, or peak traction characteristics. Regardless of wear and tear, replace tires at least every 6 years. Temperature Uniform Tire Quality Grading The temperature grades are A, the highest, B, 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 heat when tested under controlled conditions and maximum section width. on a specified indoor laboratory test wheel. For example: Treadwear 200; Traction AA; Sustained high temperature can cause the ma‐ Temperature A terial of the tire to degenerate and reduce tire life, and excessive temperature can lead to DOT Quality Grades sudden tire failure. The grade C corresponds Treadwear to a level of performance which all passenger Traction AA A B C car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades Band 165 Online Edition for Part no. 01 40 2 960 891 - II/15

owners manual BMW i8

owners manual BMW i8 - year of production: 2014 - BMW i8 owners manual EN