A 48"wb, 52" z, 21" wb All of this in a somewhat comfortable manner. This year I hauled a 36" wb up front turned sideways (what a pain), the z behind it then the 21" sideways behind the z smushed up against the ramp. I have the opportunity to add a 48" wb for next to nothing but want to make sure it will work w/out buying a second trailer. Everything is Scag. Yes, the 21" is necessary and can't stay behind.