BMW X3 E83 owners manual page 90

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

Tire identification marks Uniform Tire Quality Grading Knowledge of the labeling on the side of Quality grades can be found where appli- the tire makes it easier to identify and cable on the tire sidewall between tread choose the right tires. shoulder and maximum section width. For example: Tire size Tread wear 200 Traction AA Temperature A e.g. 205/60 R 1591W Nominal width DOT Quality Grades in mm Treadwear Aspect ratio in X Traction AA A B C Radial type Temperature A B C Rim diameter in inches All passenger car tires must conform Load rating to Federal Safety Requirements in Wheels and tires(not on ZR tires) addition to these grades.< Speed rating (before R on ZR tires) Treadwear The treadwear grade is a comparative rat- Speed code letter ing based on the wear rate of the tire when T = up to 118 mph/190 km/h tested under controlled conditions on a H = up to 131 mph/210 km/h specified government test course. For example, a tire graded 150 would wear V = up to 150 mph/240 km/h one and one-half (1 g) times as well on the W = up to 167 mph/270 km/h government course as a tire graded 100. Y = up to 186 mph/300 km/h The relative performance of tires depends upon the actual conditions of their use, Tire Identification Number however, and may depart significantly from the norm due to variations in driving habits, Tires with DOT codes meet the guidelines service practices and differences in road of the U.S. Department of Transport. characteristics and climate. DOT code: Traction e.g. DOT xxxx xxx 3603 The traction grades, from highest to lowest, Manufacturer code are AA, A, B, and C. for tire make Those grades represent the tire's ability to Tire size and stop on wet pavement as measured under tire design controlled conditions on specified govern- Tire age ment test surfaces of asphalt and concrete. A tire marked C may have poor traction Tire age performance. The tire's date of manufacture is indicated The traction grade assigned to this on the sidewall: tire is based on straight-ahead brak- DOT . 3603 indicates that a tire was man- ing traction tests, and does not include ufactured in week 36 of the year 2003. acceleration, cornering, hydroplaning, or BMW recommends that you replace all peak traction characteristics.< tires after 6 years at the latest, indepen- Temperature dently of the fact that tires can reach an age The temperature grades are A – the of 10 years. highest – B, and C, representing the tire's 88 Online Edition for Part No. 01 41 0 157 631 - © 07/03 BMW AG

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