riding stock diablo road tires? if so : they're gone by the end of the day and let go, so your TC does its job... go for SC2 compound tires and you'll only see it once in a while...
Was thinking either SC2s or Michelin Power Cup B for my next set. Only problem is il be riding track aswell as road,and from friends experience the SC2 on road lasted around 4 weeks until they were shot!