Ford 2009 Expedition v.2 Manuel d'utilisateur télécharger pdf (Page 254)

WARNING: Age

Tires degrade over time depending on many factors such as

weather, storage conditions, and conditions of use (load, speed,

inflation pressure, etc.) 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 your spare tire when you replace the road tires or

after six years due to aging even if it has not been used.

U.S. DOT Tire Identification Number (TIN)

Both U.S. and Canada Federal regulations require tire manufacturers to

place standardized information on the sidewall of all tires. This

information identifies and describes the fundamental characteristics of

the tire and also provides a U.S. DOT Tire Identification Number for

safety standard certification and in case of a recall.

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.

Tire replacement requirements

Your vehicle is equipped with tires designed to provide a safe ride and

handling capability.

2009 Expedition (exd)

Owners Guide, 2nd Printing

USA (fus)

Tires, Wheels and Loading

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Ford 2009 Expedition v.2 Manuel d'utilisateur Page 254