2015 Ford Transit 150 Van Owner Manual Printing 3 - Page 249

Wheels and Tires Incorrect or inadequate vehicle maintenance can cause tires to wear abnormally. Inspect all the tires, including the spare, frequently, and replace them if one or more of the following conditions exist: Tire Wear Tire Damage Periodically inspect the tire treads and sidewalls for damage, for example bulges in the tread or sidewalls, cracks in the tread groove or separation in the tread or sidewall. If damage is observed or suspected have the tire inspected by a tire professional. Tires can be damaged during off-road use, so inspection after off-road use is also recommended. Tire Age WARNING Tires degrade over time depending on many factors, for example weather, storage conditions, and conditions of use, for example load, speed and inflation pressures the tires experience throughout their lives. In general, tires should be replaced after six years regardless of tread wear. However, heat caused by hot climates or frequent high loading conditions can accelerate the aging process and may require tires to be replaced more frequently. You should replace the spare tire when you replace the road tires or after six years due to aging even if it has not been used. E142546 When the tread is worn down to 0.08 in (2 mm), tires must be replaced to help prevent your vehicle from skidding and hydroplaning. Built-in treadwear indicators, or wear bars, which look like narrow strips of smooth rubber across the tread will appear on the tire when the tread is worn down to 0.08 in (2 mm). When the tire tread wears down to the same height as these wear bars, the tire is worn out and must be replaced. 246 Transit (TTH) Canada/United States of America, enUSA, Edition date: 03/2014, Third Printing