I have the same front tire wear pattern on my VTX 1800. Heard all of the reasons such as road crown, turning speeds, fork issues, tire pressure, etc. Haven't noticed it on the F6B yet but only have about 12,000 miles on it with 8,000 put on flat roads going out west. Lot of twisties but not much road crown or turns, so maybe that is the reason of the wear pattern.

I notice that there is not much mention about the Metzler tires on this site. However, the Metz's are one of the preferred tire on the VTX. I have always run Metz's on the VTX and usually get about 20,000 miles from them. Granted, they are ready to change out when I do replace them. The front is always badly cupped when I finally pull it off.

Do the Metz's not preform well on the Goldwing? Weight is not that much different but the X does have a lower center of gravity than the F6.