The P-700Zs do flatspot when sitting for awhile, but git round again once warmed up. They are otherwise EXCELLENT tires. Flame away guys, -glen Me Pirelli P-700Z's are here! Now I will find out if they are as awful as the 'round, black, holds air' side reputation Pirelli have garnered according to some of our dear listers. Square tires to match my square rims. :-)