Originally Posted by fast-ho-cars
the inner core foam on the rim is firmer on a Dbl pink rear. the yellow 2stg rear has a softer core. as for the actual racing compound of a yellow, i have heard they are whites or dbl pinks.
black exotic compund are close to purples in shore rating, black compounds are used on hi-bite carpet tracks for consistent traction and feel. in some conditions purple tend to get gripier as the race progresses.
Based on that, what would you recommend for high bite indoor asphalt, like the nationals at PIR?