This tire is a discontinued DOT legal competition tire, the current BFG tire that would be most similar to this tire would be the BFG G-Force T/A KD. Although not quite as sticky as the R1, the KD is a street tire that's great for road racing & autocross.
http://www.tirerack.com/a.jsp?a=DY2&...Force+T%2FA+KD
If you're looking a pure DOT legal competition tire that is most similar to the BFG R1, than consider the Kumho Ecsta V700:
http://www.tirerack.com/a.jsp?a=DY2&...del=Ecsta+V700
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