For a comparison between the narrow bodied 4/4 and 3 wheeler (which I am assuming you're replacing?):
I have both the 3-wheeler is much wider in the garage (front axle length) than the narrow bodied 4/4. I surprised me how much; I had a slight panic the week before I took delivery!
However the feel in the cockpit of the 4/4 is palatial compared to the snugness of the 3-wheeler. You really feel the room.
I don't think I could easily fit a wide-bodied trad in the gargae with the 3-wheeler.
