Tires: Age of my tires..., DOT Code

Question
My husband recently purchased "used" tires on craigslist and we're trying to figure out how old they are.

The DOT is:

BX8145  S05R

That is it, we've checked both sides of the tire and can't find anything else.

Answer
Linda,

DOT codes are a 10 to 12 digit number located near the letters "DOT".  BTW the digits can be numbers or letters.

The first 2 digits are a code for the manufacturing plant.

The next 2 digits are a code for the tire size.

The next 3 or 4 digits are a code for the type of tire.

The last 3 or 4 digits are the date code.  The format is week/week/year/year or week/week/year

Starting in the year 2000, the date coding used is 4 digits.  That means the highest number you should see for the year is 08.  Before 1999 the format was 3 digits.  1999 and 2000 are transition years, so you will find both 3 and 4 digits.

Based on what you've got, you have not captured the DOT code.