I have a 3520 w/CAB, a 72D MMM, and Turf special tires all around. my property has a few steep inclined ditches with grass I mow. When I had my 4310 with the same turf specials, I would go into those ditches using the up and down technique, not sideways across the ditch. Once I got the cab, I got more worried even with going up and down and so I stopped using the big tractor to mow those ditches, and just used a walk-behind or my battery powered String trimmer. If you have a tilt meter, then JD has a calculation and/or estimate on what minimum angle the 3x2x series may tip over. Additionally there are threads on this forum that discuss this in great detail and all the remedies that people employed and tried out for this very case and the minimum tip angles. If one searches on topics, such as tip meter, wheel spacers, mowing on hills, mowing on steep inclines, ..etc. You will be provided more information.