Post a photo of the DOT code if you can.
I posted some DOT code info here: http://www.classbforum.com/forums/f5...code-1837.html
For tires manufactured before the year 2000 the last three numbers of the DOT code indicate the week and year of manufacture. So if the last three numbers are 496 that means the tire was made in the 49th week of 1996.
For tires manufactured after the year 2000 the last four numbers of the DOT code indicate the week and year of manufacture. So if the last four numbers are 5208 that means the tire was made in the 52nd week of 2008.
I've never seen anything like that
I pay attention to DOT codes now on used vehicles after determining the tires on my van dated back to 1997 when I bought it a few years ago.
It will be interesting to confirm the age of the tire. 2011 is not an old tire.