Got into some more serious measuring and mock up this weekend. I borrowed a wheel and tire from a dirt track racer friend of mine, Hoosier 25.5X8X15, was thinking it would be a slam dunk for the front. Removed the caliper and bolted it on and wow was it big! Barely cleared, may work with a different rim. I have it in a 15X8 with 4 inch back spacing, I think 4.5 back spacing would work. The thing about this Hoosier tire, not only is it tall, but really wide! It is only an 8 inch tread, but the tire itself is over 11 inches wide at the side wall.
My question is: has anyone run Hoosier asphalt racing tires on a road course? I have access to a supply fairly cheap and was curious if they were worth the effort. I was thinking about an 26.5X8X15 mounted on a 15X8 rim with 4.5 bs on the front and an 27X11X15 mounted on a 15X10 rim with 5 bs on the back. I admit the tire looks really good, very period correct which is what I am looking for. If these aren't worth the effort I know there are a lot more choices.