If rubber cannot handle the heat and the speed........there are always FOAMS....from 26mm to even 35mm....LOL
There should not be a limit of speed and power.........but only for those who can handle it, and for ppl like me to WATCH them race in FAST MOTION.
I hope they are not doing the F1 thing....from no turbo allow, to no slick tires, later, they might even limited the cyclinder of the engines...then in year 2067, they might only allow electric powered F1 instead of racing gas powered F1....