This may be old news but B.F.Goodrich should have their new G-Force T/A KDW tire in the 305/40/22 available now. I think Summit Racing has them already.
http://www.bfgoodrichtires.com/bfgapp/catalog/tires/gforcetakdw.jsp
http://www.bfgoodrichtires.com/bfgapp/catalog/tires/gforcetakdw.jsp