How much lateral tilt before tipping over ?

[Poopdeck Pappy]

Adding some wheel spacers would help add some stability too.

 

[Citydude]

All good information here. I mow right of ways and without a doubt, loaded rear tires, low front counter weight and rear tire width is imperative for safely traversing slopes. Wheel spacers and suitcase weights are cheap compared to the investment of a tractor or life.