I'm on my first set of Metzeler ME 880s (radials) on the Bandit 1200 and the life seems quite good compared to the original Michelin Macadams
(A 90 and M 90).
The originals were quite worn at 11K miles and the Metzelers are getting ready for replacement at about 23K miles -- maybe another 1-2 K left at most with 4/32" tread left front and rear. No real visible cupping on the front, but the rear has a noticeable wear pattern unique to radials that I've seen before with Michelins, sort of raised in the center with scalloping on either side of center.
I'm using a standard 120/70-17 VR front and the rear has been changed to a 170/60-17 VR for a slightly larger diameter and subsequent correcton effect on the speedometer. That, with a change to a 16 tooth front sprocket yields a very accurate speedometer, checked at 60 MPH and 72 MPH. These speeds give a one mile time of 60 seconds and 50 seconds respectively on a marked freeway. The odometer is about 6% off, reading low, but easily compensated for when calculating mileage.
Next tires wll be Avon Azaros in the same sizes as above, but I don't know what to expect -- a friend riding a Kawasaki Concours reports about 12K miles, which I hope to better as I tour at just above the speed limit.
More on the Avons later.