Automotive Smog Check Tips
The Author of this book was looking at a 3 year old vehicle
when he noticed that the Right Rear tire had a build date code
newer than the vehicle.
He asked the Owner, "How badly was the vehicle hit ? The Owner
stumbled and shuttered a little, then said,"How did you know that
an accident occurred ?" He told the Owner that the Right Rear
tire, while being the same exact tire as the others, had a date
code indicating that it was only One year old, whereas the original
tires were the same age as the vehicle.
The first "2" numbers of the DOT code on the Tire indicate
the week of the tires Manufacture and the last "2" digits
of the FOUR Digits indicate the Year the tires are manufactured.
The Owner immediately admtted that the vehicle slidon ice and
hit a Curb , damaging the Right Rear Tire and Wheel Rim. Both
the Tire and Wheel Rim were replaced and the Alignment checke.
The Owner then dropped the price of the vehicle $500 !
Knowing the Date Code help assure that Fresh Tires are purchesed.
It also helps Techs and Vehicle Owners determine if the Tires have
Automotive Principles Techology - James D. Halderman (1999 Edition)