Well, my mate, who got me into the K bike in the first place, is on his fourth, a new one every year, the old one traded with 40K miles on the clock. Ridden every single day, summer, winter, day and night!
With the exception of the latest, which has zero miles on it, every single one has had a multiple and different selection of the following:
High idle/faulty ICV
Ball joint failure at c18,000 miles
Clutch judder/replacement
Paint flaking off wheels
Brake failure/frothing in reservoir
Multiple instances of switch failure
Oops! Forgot (new-style) cam-chain tensioner failure x 2
So far, he hasn't had failure of coils packs or flaking of paint off final drive/engine/transmission and won't get the surging spluttering, stumbling of the early 12's like mine.
A 13 is no faster, no better in corners and no quicker A-B than a 12, circuit use excepted.
Brian (who says 'So, yes, I agree, why wouldn't I want one of those? I must be mad!'
)