I put the C-II on my '05 FLTR in April 2012.....Rear tire got replaced @ 15,000 miles... I could have gone further, but decided to switch before a long trip
Over 100k on this bike I've tried a few tires... this is MY experience.. as they say YOUR miles may vary.... I'm reporting, not debating.
OEM Dunlop 402 Replaced @ 8k
Metzler Marathon (old style) gone @ 8K
Dunlop Elite-3.... 12-14k on a rear..
Michelin Commander II 15k on the rear with rubber left
I've put the C-II on my wife's bike.... and am now on my second C-II set.
I have promoted the Dunlop Elite-3 for the past 5 years... wonderful tire... good grip, and long lasting..... but the Commander II is just a better tire.. not perfect....but a little better
If you buy a C-II you will like them... I've only read a few bad reviews, and hundreds of good reviews.
One warning... avoid the Commander (first seris) good OEM replacement but they are NOT the Commander-II...