So the screw almost nailed you 
Bad thing Big B is that many on this site have switched to the 18" Metzler 880's on the rear.
No one around these parts even had one in stock. Took the dealer 9 days to receive the tire from their supplier. This worries me and puts a little doubt in minds of others about making extended trips and possibly having a flat tire on the road. Many of us just can't wait for 9 days on the side of the road waiting for a tire. I have called many Harley shops on route to and from Nelson to see if they have one in stock. Very few have them in stock. SCARRY what I have done is bought 2 extra spares and took one to one of my plumbing supply houses. They will overnight it for me if I need one while on the road. Still will loose 2 days if I have to do this.
Moral of this story to me is that when we change things like modifying our motors or change our tire size, and we ride on long trips we are taking a huge chance. If we have a problem it is increased exponentially by our modifications of our scoots. So now every time we take a trip we take the chance that we might have an extended stay somewhere, that some of us can't afford.

Big B bad thing on this tire deal was that I was only 200 milse from home, I would hate it for anyone to have this happen 500 miles or more from home. Maybe my misfortune will help others pre-plan a little more before making a trip.