I am a bit surprised that the response wasn't a bit more mixed. My
BX23 doesn't have spacers and the tires are not loaded either. So far I have not tipped it over, but it has been on two wheels a few different times.
I live on ten, very irregular acres lots of dips and bumps. The ROPS is always up and any time I am off the smoother areas, the seat belt is buckled up.
I do love the tractor and for most normal use, the tractor is quite stable. One of these days I may put a pair of wheel spacers on it, but then I might get over confident.