Autocross tires

[badrich]

I currently am running Halibrand 15" 6-pin knockoff wheels (7 1/2", 9 1/2") and BF Goodrich T/As. Adequate street tire only. I used to autocross an old Stingray and used to drive it to the event. I would like to do the same with my Cobra. I love the appearance of my 15" wheels but there don't appear to be any DOT tires available that would be suitable for serious autocrossing. My car is a fair weather beast, so dry performance is all I am interested in. I have a friend who uses the Kumho Ecsta V700 on his Cobra and loves them. He uses 275/40ZR17s (10" tread). I'd like to use that size up front, but I'd like something larger on the rear. The challenge is that their next size larger tire is 335/35ZR17 (12.4" tread). While I'd love to go that large, I'm worried about tire clearance. Has anyone out there had success stuffing these large tires under a Contemporary or similar beast? A *little* rubbing would be OK. Or is there another brand that would stick as well but be a tad smaller? I am planning on going with PS Engineering wheels. I'm still breaking in my new motor, but it will be ready as soon as the weather clears, and I am anxious to really learn how to drive this beast properly. And for me, that will be autocrossing. Thanks for your help, Rich.