I don't really rail the bike but i do come from a sport bike back ground.
I like tires that have a bit of a stick to them. The Torrance tires do this for me. I got 13000 miles out of the M3's, so I'm hoping for the same for the M4's. When the m3's started to wear out they cupped real bad towards the end. They say they have taken care of that with the M4's....well see.
The tires you folks are talking about do have a long life for tire whare, but they do not grab the road and they will push threw corners even at Med. speeds. I sure they will handle the off road fine. I took them off the bike before I went off road with them. For the cruzer type rider these would be fine.
I like to ride a brisk ride and the M4's work fine for me on the road as well as off.
As every rider know's it's to each his own to find the tire and ride pace that suits themselfs.