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  1. New P-Zero PZ4?

    Alfa Giulietta
    Has anyone fitted the sport version of Pirellis new P-Zero, the PZ4? I’m thinking of changing over tyres sooner than expected. I’m not enjoying the P7’s all that much. (Currently set to 40f/37r psi) I have Michelin PS4 on my 147... very good all round compromise tyre and would probably go with...