not sure on worldwide specs these days, but the "DOT" code always used to be 4 figures. The first two = week of manufacture and the last two = (3rd and 4th) numbers of the year.
No. That’s not it. It’s a 4 digit number elsewhere in one side only of the tyre. As Chris said, it will denote week (out of 52) and year (last 2 digits eg 22)
