I found that the front Avon didn't last much longer than the back, and it cuped easily.The pilot also cupped, but at least I got good mileage from them.
There has been some reports of belt seperation on the metzlers fronts, but it seems to happen more on the Z4's
Cupping? On an Avon or P.R.? Hmmmm, what tire pressures were you running? I had bad cupping on my OEM 'Stones, but they are known for this effect because of their tread design, which is not at all similar to the Avons or Michelins.
Call me a chicken and move my name to that column, but it would only take one separation to ruin my riding day. I really hope they have corrected any carcass problems with the Z-6, but I didn't care or the OEM Z-4s.
Tire are an expendable wear item. You
are going to use them up and discard the worn tires. Why not try different brands and see what fits your style the best?
Avons seem to be the tire of choice for longest mileage (running 40-42 lbs. pressure). I'm currently using Michelins Pilot Roads because of my rebellious nature when
everyone is running Avons.
(I've used 'Stones, P.R.s and Avons in the past) I believe I will try a set of Diablo Stradas next. Hey, if I don't like them, they'll be worn out in 6-8 months or so anyway...if I really don't like them, they'll get replaced, like the OEM Metzs on the '05.