Bias ply slicks vs drag radials

Thanks Rocco. This will be a track only car so there won't be a need for tire changes. I have 15 x 10 wheels on the back and I was hoping to run about a 12" tire. Can I do that with a slick?
Your doing it backwards and if you haven't bought any tires yet you should get a set of 275/60/15 M/T Pro Bracket Radials and spread the tire out across your 10" wheel. The less sidewall "bulge" the better from at least a drag radial standpoint.