Does size matter?

[Irish in Oz]

The 180/55 does fit fine as it designed for 5.5-6.0. The 190/50 and 55 designed for 6.0-6.5.
I'm not a boy racer anymore so have been using 190/50 but I think I will try a 190/60 next 

[Jambo]

I appreciate all the comments and have got to one conclusion. I need to test drive a 14 fitted with standard tires.
It wont be an easy task, I know no one who has a 14.
By the way, the only other bike I have recently ridden was a GSXR600 k6. Never have I ridden one of these, 127bhp on a 170kg frame clocking 14500rpm!!!
I didn't like it at all...I simply loved it! which made me consider getting one for the track only.
Public roads can be a pain in the arse...literaly, not suitable for high speed, and as some may know, I leave next to a race track, which now and again, has trackday in progress.
My 14 is for slow to medium speed cruising, and so should be every naked bike.