We have enough room to do a shed 80x20, but what I'm wondering is how much would be best suited to separate off solely for fixing. I mean taking only one tractor as a project as a time, chatting mxm 140 etc and possibly 135 but not long term projects. Would 20x20 or 20x30/40 be room to remove wheels etc, but the idea was origionally this shed would be doors right accross the front for tractors to drive into at night, so still would like as much room as possible for this but big enough to have room to work at one. The separate area i intend to have sheeted off to be heated and no drafts. Possibly only get this first 40ft up as the steel is 2 18x6 beams for accross the front-got at the right money a few years ago.