On one of the other forums I am a member, Lightning Rodder, we are tying to get Hoosier to make a slick in 30/10.5/16...To run the 15" slicks on the L's we have to grind the hell out of the calipers...Anyway, if you would be interested in a tire this size, here is a link to the thread...Thanks, guys.
http://www.lightningrodder.com/forum/showthread.php?t=35042