Quote Originally Posted by d2dracer

Anyway my question is are the tires still good or do they need to be replaces before I go to the track again?

Also... how can this problem be avoided in the future. Maybe by giving the tire more time to heat up?
Rather than accepting a bunch of speculation from Michelin riders as fact - take the tire to someone who knows Pirellis (i.e. Mike @ Faster!) and have them assess how bad the cold tear is and what you should do about it. Depending on how bad it is - the tire may be fine to continue to use. Age is not necessarily an issue in this case.

Also ask about what your target pressures should be for the tire you're running - and remember Pirelli sets HOT pressures, not cold - so that may have affected things. Different compounds may also be more susceptible to tearing - especially on new pavement - so again, see what your tire vendor recommends. :wink:

Edit: You can get more info on Pirelli tires/pressures, etc here: http://www.diabloracer.com/