It seems I have been on the quest for a good hardpack tire for to long. the tracks I ride on get like concrete in the summer.I got a pirelli 454 mid to hard for a good deal and I toasted it in 2 rides not happy. !.ve tried the bridgestone m21 22 combo and toasted my rear in one ride! The 739 wore too fast. The pirelli mt450 felt like i was on ice ! and it chunked off faster than a rabbit gets f....d. No more pirellis for me and I'm a wop! Cali dudes help me out here what is the best bang for you buck, longest lasting with a touch of versitality hardpack combo you can buy.