My rear Invo's were toast after only 13K miles.
Fronts still have a bit of tread left, but not much.

Tomorrow I'm getting Sumitomo HTR ZIII's:

http://www.tirerack.com/tires/tires....=(Y)&minLoad=S

http://www.tirerack.com/tires/tests/...%3D535YR9HTRZ3

Look to be a great tire for the money; $740 mounted and balanced.