Goodyear F1 GS-D3 or Pirelli PZero Nero, which set to keep?
I have two sets of tires now. One set of Goodyear F1 GS-D3s used for 6000kms and a set of Pirelli PZero Nero that the fronts are 50% life and the rears are used for 1500kms. I go on track days once a month in the summer time. Which set should I keep?