I just put on a set of Mich. P.P. and have a vibration in front at med. speed 60 to 90 and a bad vibration at 100+ I had the tires re-balanced checked the rear, the chain etc. I was told mich P.P. can do that. not for me I will try Bridgestone BT014 new BT002, I love Mezlr tires M-1 the new M-3 or RennTech, Pirrelli D.C. 3,s or Dunlop But no Michy Frenchy Tires for me.