On my Z8, it's 50.75" across the front tires outside edge to outside edge so if I was to take the tires off, mount the rims only I am sure it would be at or slightly under 50". At the shoulder bar, the widest point aside from the mirrors, from outside edge to outside edge I get about 53". Now that I have installed the EX fenders on my 53 I'll have to take some new "Widest Point" measurements once I have completed the modifications I am doing to them. I am taking the lower wings off because they will be what will catch first on the restrictors we have around here.