The easiest way to think about it is to level in the right order and keep the RV supported on something solid. On a gravel site, I usually start by parking as close to level as I can before touching any jacks or blocks. If the site is badly sloped, a few extra minutes of repositioning can save you a lot of hassle later. Gravel shifts more than pavement, so the first goal is to find the flattest part of the pad and make sure the tires are sitting on firm ground, not on loose stones that will sink as the RV settles.
For a travel trailer or fifth wheel, side-to-side leveling usually comes first. Put a small level inside the RV or use a leveling app to see which side is low. Then use leveling blocks, ramps, or boards under the low-side tires until you are close to level. It helps to use wide, sturdy pieces rather than thin scraps of wood, because gravel can let narrow supports dig in. Once the trailer is level side-to-side, chock the wheels before unhitching. After that, handle front-to-back with the tongue jack or landing gear. If the rig has stabilizer jacks, remember they are for stability, not for lifting the whole weight of the RV.
For a motorhome, the process is similar, but you’ll often use the built-in leveling system if you have one. Even then, I like to start with the coach as close to level as possible so the system does less work. On gravel, it’s smart to place jack pads or blocks under any leveling jacks so they do not sink into the surface. A good pad spreads the load and keeps the jack from disappearing into soft spots overnight. If you don’t have pads, even a solid board cut to size is better than metal on loose gravel.
One thing people sometimes miss is checking what happens after the RV settles. Gravel can shift a little after you walk around inside, extend slides, or set up camp. I always recheck the level after the rig has been occupied for a few minutes. If you are still way off, don’t force the jacks to compensate for a bad site. It is usually better to move the RV a little or switch to a different pad than to stack blocks too high or lift one end too aggressively. Also, make sure your awning, steps, and slide-outs still have enough clearance once the RV is leveled. A setup that looks fine on the outside can still leave a door sticking or a slide binding if the coach is twisted.
