2013 Ford E350 Super Duty Passenger Owner Manual Printing 3 - Page 247

246 Wheels and Tires Note: You may not find this information on all tires because it is not required by federal law. G. H: Indicates the tire's speed rating. The speed rating denotes the speed at which a tire is designed to be driven for extended periods of time under a standard condition of load and inflation pressure. The tires on your vehicle may operate at different conditions for load and inflation pressure. These speed ratings may need to be adjusted for the difference in conditions. The ratings range from 81 mph (130 km/h) to 186 mph (299 km/h). These ratings are listed in the following chart. Note: You may not find this information on all tires because it is not required by federal law. Letter rating Speed rating - mph (km/h) M 81 (130) N 87 (140) Q 99 (159) R 106 (171) S 112 (180) T 118 (190) U 124 (200) H 130 (210) V 149 (240) W 168 (270) Y 186 (299 ) Note: For tires with a maximum speed capability over 149 mph (240 km/h), tire manufacturers sometimes use the letters ZR. For those with a maximum speed capability over 186 mph (299 km/h), tire manufacturers always use the letters ZR. H. U.S. DOT Tire Identification Number (TIN): This begins with the letters DOT and indicates that the tire meets all federal standards. The next two numbers or letters are the plant code designating where it was manufactured, the next two are the tire size code and the last four numbers represent the week and year the tire was built. For example, the numbers 317 mean the 31st week of 1997. After 2000 the numbers go to four digits. For example, 2501 means the 25th week of 2001. The numbers in between are identification codes used for traceability. This information is used to contact customers if a tire defect requires a recall. 2013 Econoline (eco) Owners Guide gf, 3rd Printing, May 2013 USA (fus)