Most extreme angle for fifthwheel

When you park it, will it be level? If not, there will be too much stress on the slide outs and suspension/tires. And refer will not work. But as far a tipping over on the road I would be less concerned, the center of gravity is not that high since the majority of the weight is in the frame/floor/axles. Wind blow over is a more likely problem when towing in windy conditions.