As far as a fair assessment I don't think anyone can do that.
Best that I can tell the wear on the 407's are all over the spectrum with some having issues at 3 to 4K miles and some having issues at 9 to 11K miles.
The wear does not appear to be bike specific either with different models going from high to low in wear and cupping.
My experience with my original 407 was that it was great till I hit about 10K miles and with plenty of tread left at 11600 miles it was cupped so bad that it had to go.
Knowing the 407's were having issues I ordered a 408 for the front of my 09 SEUC.
I am now at 19200 miles and with 7600 on the 408 it is wearing fine.
Will it last longer than the 407 and not cup, I don't have a clue.
My 407 never had an issue till I hit 10K so I am waiting to see how this 408 holds up.
For me, my experience says that a front tire (based on the past 10 baggers I have owned) should give around 18 to 24K miles of service.
Will my 408 do that, only time and miles will tell the story?
SBB 