You can put the FJ1200 front end on with some changes so you have the tubeless 3 spoked wheel at the front the same as the rear
Regarding the "Wider rear tyre".....would there have to be some sort of matching to the front ?
I have been told by owners with the wide rear tyre that they don t like cornering too much and tend to want to "Stand the bike up"
The wider back tyre is not squeezed on it is the correct tyre for the rim