Hara is a sponsored driver! he gets all the tires & inserts he wants, i seriously doubt he wore out a set of any tires in one run!?, he probably wanted to try that particular insert with another tire combo thats why he cut them out.
He was using the same tire combo for all of his finals runs...
RP Tires, is take off! RP 30's are what a CS27 would be, only in a new package and a new name!.
RP is Take Off but a RP 30 is not like a CS 27. We run on concrete and 27's last for weeks and tend to lose side bite before foward bite. Tried RP 30's and wore them out in 5 runs. These were both premounts and the 30's had a larger air gap. Track temps were about the same. If I remember right, Take Off's site they wrote them up as having a little more traction and a little more wear. It sounded like they were trying to make a Sorex comparable tire. I know Sorex's wear out quickly on our track. I hope they don't stop producing the CS series.