I got 2 sets of Dunlops Sp Sports slicks, First set are 255/680/18 which I think are a 255/40/18. The second set are 285/680/18 which are 285/40/18. These slicks brand new come 4/32nd new and these are at 2 1/2 32nd new. pics are available aswell. asking for all $350 obo
They are soft and sticky tires and should work well on street or track.

Here a site on the traction and rating of these tires. http://tireline.goodyear.se/radial%...20gt%20cars.htm