Most RVs specify that you need to level your RV first and then deploy the slides or the patios. You shouldn’t ever slide your slides out or expand your patios without leveling your RV first, or you risk tipping it over. You’ll put unnecessary strain on your RV’s leveling jacks or any method you use to level it. It can speed up the wear and tear on both your RV slides and the leveling system you’re using. It could also damage those components.