Kris01 wrote on 12/06/15 at 20:19:09:I'm running Pirellis on mine and 30 psi seems waaay too low. It "feels" dangerous and squirrelly. I think I run somewhere around 35-40 psi for it to feel "confidence inspiring".
I've heard the Metzelers wear flat on top of the tread because they are so thick. This will give you a square profile instead of the standard motorcycle tire round profile. When you lean the tire over onto this edge, handling will get sloppy. Add that to the age of the tire and you have the makings of a disaster.
Yeah, I think I'm starting to notice the floppiness or "sloppiness" of the handling due to the wear. I also remember reading the opinion that they wear flat. Seems a rather ineffective way of making a long life tire, doesn't it? And too darned expensive.

Of course, some swear by them for traction and handling.
I sometimes feel like those 140/80 Metzlers were designed a bit flat from the time they're new, and the wear doesn't help. Of course, I got the tire used with the bike, so what do I know?