This article is from the VW Technical FAQ, by with numerous contributions by Jan Vandenbrande others.
A: See the rec.autos FAQs, the tire FAQ, and also the VW Performance
FAQ for size info.
For the other number:
The last 3 numbers on the DOT code is the build date: 113
means the tire was made in the 11th week of 1993, or 015 = 1st week of 1995.
 
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