I thought the Shinko slicks were intended for drag racing, not roadracing/trackdays. Have they changed that recommendation? I have never seen them at the track. I would be very leery of using them. Metzler and Bridgestone make trackday slicks that can be used without warmers. I suspect they will last longer and be stickier than most people need, compared to race specific slicks. I race on the Bridgestone DOT tires and don't use warmers. I am putting the Bridgestone slicks on next but only because they last longer than the DOTs. I am sure they will not help me go any faster since there are lots of riders faster than I am on the same DOT tires.