I believe this is the tire I need to get..
Rival S 1.5 — The same proven Rival S compound introduced in 2015 with enhanced internal construction to improve turn-in and transitional response on low to medium horsepower momentum autocross cars. Rival S 1.5 will be available and SCCA Solo legal for 2017 in eight sizes with section widths 255mm and smaller across 15″-18″ rim diameters.
Coming Spring 2017 new size 245/40VR15