2015 Ford Transit 150 Van Owner Manual Printing 3 - Page 237

Wheels and Tires Tire Quality Grades apply to new pneumatic passenger car tires. The tire Quality Grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example: Treadwear 200 Traction AA Temperature A. They do not apply to deep tread, winter-type snow tires, space-saver or temporary use spare tires, light truck or LT type tires, tires with nominal rim diameters of 10 to 12 inches or limited production tires as defined in Title 49 Code of Federal Regulations Part 575.104 (C)(2). Tire Quality Grades are determined by standards that the United States Department of Transportation has set. United States Department of Transportation Tire Quality Grades The United States of America Department of Transportation requires Ford Motor Company to give you the following information about tire grades exactly as the government has written it. Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified government test course. For example, a tire graded 150 would wear 1½ times as well on the government course as a tire 234 E166373 As a result of the above dimensional differences, sport-utility vehicles, vans and trucks often will have a higher center of gravity and a greater difference in center of gravity between the loaded and unloaded condition. These differences that make your vehicle so versatile also make it handle differently than an ordinary passenger car. TIRE CARE Information About Uniform Tire Quality Grades E142542 Transit (TTH) Canada/United States of America, enUSA, Edition date: 03/2014, Third Printing