I just ordered up a set of M3 for my Gixxer, this will be my first brand
change in 20,000 miles. Ive been using nothing but Bridgestones.
Ive had 4-5? sets of BT014s and 2 sets of BT015s with great results.
Frankly though those tires worked well for me so the only real expectation
I have is for them to be as good.
Any of these supersport tires are gonna wear fast, the benefit of them is if you ride hard they stick instead of spinning up.
If you dont ride your Busa hard or just do alot of straight roads or commuting then id suggest going to a sport touring tire like the Pilot Roads
or something.
But if your complaining of the BT56s , which do slip if you push em then you probably need to stick with a fast wearing supersport.
M1 , M3, Qualifier, BT014, Pilot Power, Diablo , Diablo Corsa etc.