Pirelli has really gone downhill!! Wish Michelin was more popular at track-days, I really do like their tires for autos. But, being capitalists, there can be only ONE tyre vendor at the track. Depending upon event, it's either Dunlop or Pirelli. I make sure I have sufficient spares and have two sets of extra wheels with different tyres mounted. Trying out new Bridgestone RS11 and Dunlop Q3+ today.