mazda-om-release2-029 1..372 ++ - Mazda Canada

Customer Information and Reporting Safety DefectsTire Information (U.S.A.)H“H” is the speed rating. The speed rating denotes the maximum speed for which the use ofthe tire is rated.Letter RatingQRSTUHVWYSpeed Rating99 mph106 mph112 mph118 mph124 mph130 mph149 mph168 * mph186 * mph* For tires with a maximum speed capability over 149 mph, tire manufacturers sometimes use the letters ZR. Fortires with a maximum speed capability over 186 mph, tire manufacturers always use the letters ZR.M+S or M/S: Mud and SnowAT: All Terrain.AS: All Season. The “M+S” or “M/S” indicates that the tire has some functional use inmud and snow.U.S. DOT Tire Identification Number (TIN)This begins with the letters “DOT” which indicates the tire meets all federal standards. Thenext two numbers or letters are the plant code where it was manufactured, and the last fournumbers represent the week and year the tire was manufactured. For example, the numbers457 means the 45st week of 1997. After 2000 the numbers go to four digits. For example,the number 2102 means the 21th week of 2002. The other numbers are marketing codesused at the manufacturer's discretion. This information is used to contact consumers if a tiredefect requires a recall.Tire Ply Composition and Materials UsedThe number of plies indicates the number of layers of rubber-coated fabric in the tire. Ingeneral, the greater the number of plies, the more weight a tire can support. Tiremanufacturers also must indicate the tire materials, which include steel, nylon, polyester,and other.Maximum Load RatingThis number indicates the maximum load in kilograms and pounds that can be carried bythe tire.Maximum Permissible Inflation PressureThis number is the greatest amount of air pressure that should ever be put in the tire undernormal driving conditions.9-23