If you want some serious gravel-spec tires, you might talk to Peter
Malaszuk at QS Motorsport in Conn.  They're selling a veritable *herd*
of Michelin M3's and M4's s one of their (SCCA class champion) rally
cars.  Tread design is a little dated, but so are our vans... and
these are fantastic tires run on rally VW's around the world.  There's
a set of competition-grade Michelin rims as well.  Everything's
14-inch.

I believe it's all used, but likely very low stage-miles; this was a
factory team, swapping tires with subsidized abandon.

http://www.rallyplanet.com/index.php?&pid=545

For those of you in the sunny southwest, there's 5 slicks available
too .   I know from talking to these guys that this stuff won't be
cheap in absolute terms (last I heard +/- $1500 OBO for package) but
if you shop at Costco because you like the volume discount on a gross
of hot dogs, this could be the deal for you.  More Michelin rally
rubber at: http://www.libra-racing.com/tires.htm

Isaac in Cambridge

> Ok, i need some non-highway-tread tires. Some with a more aggressive
> tread. Some people would refer to these as winter tires, but i'm
calling
> them Idaho tires. Have you seen how they maintain the roads around
here?