Tyre availability - 19" or 21"?
 

Hi All,

I've been reading posts on this forum for a few months now and find it a great help in planning my RTW trip.
I recently purchased a BMW F650GS for this trip but am unsure of the availability of 19" front tyres in Central/South America and Asia. I chose the GS over the Dakar as I am 5'4". Now is the time to fit a 21" front wheel if that is a better option.
Any advice?