That wobbly, bouncing feeling when someone walks through your RV is one of the most common complaints among trailer and fifth-wheel owners. The good news: it’s a solvable problem. The shaking comes from your RV’s suspension and support points flexing under shifting weight, and a combination of proper setup, better ground contact, and aftermarket bracing can reduce it dramatically.
Why Your RV Shakes in the First Place
When you park an RV and drop the stabilizer jacks, the rig sits on just a few contact points, usually four. Those jacks were never designed to bear the full weight of the trailer. They’re meant to limit movement, not hold the RV up. The tires and suspension still carry most of the load, and suspension is designed to flex. So when you take a step, your body weight shifts the center of gravity, the suspension compresses on one side, and the whole trailer rocks.
The longer your stabilizer jacks are extended, the worse this gets. A fully extended jack acts like a long lever arm with more room to flex and wobble. A jack that’s only extended a few inches is far more rigid. This is why RVs parked on flat, level ground tend to feel more solid than those parked on a slope where the jacks have to reach further down on one side.
Set Up Your Jacks Correctly
Before adding any aftermarket gear, make sure your existing stabilizer jacks are doing their job properly. Many RV owners confuse stabilizer jacks with leveling jacks, but they serve different purposes. Leveling jacks support the RV’s weight and adjust its position on uneven terrain. Stabilizer jacks exist solely to reduce rocking and sway. Using stabilizers to level your rig puts stress on components that aren’t built for it and leaves you with a wobbly setup.
Level your RV first using leveling blocks, ramps, or leveling jacks (if equipped). Once the rig is level, lower your stabilizer jacks until they make firm contact with the ground and you feel resistance. You want them snug, not lifting the trailer off its suspension. Over-cranking stabilizer jacks can bend the mounting brackets or the jacks themselves, which actually makes future shaking worse.
Minimize Jack Extension With Blocks
Since shorter jack extensions create a more rigid support, placing blocks under your stabilizer jacks is one of the cheapest and most effective fixes. Stacking blocks under each jack pad means the jack only needs to extend a few inches to reach the ground, keeping it stiffer and more resistant to rocking.
Interlocking plastic leveling blocks are the most popular option. They lock together so they won’t shift, and their wider surface area prevents sinking into soft or muddy ground. Pressure-treated 4×4 lumber works well too and costs even less. Some owners cut wood blocks to specific heights for their favorite campsites. Whichever material you choose, the goal is the same: get the ground closer to the jack so it doesn’t have to extend as far.
Add More Contact Points
Most travel trailers come with four stabilizer jacks, two near the front and two near the rear. That leaves the entire middle of the trailer, right around the axles, with no stabilization at all. Adding a pair of jacks midway between the existing ones, typically just in front of the axles, fills that gap and can cut rocking noticeably. Scissor jacks rated for stabilizer use bolt onto the frame and cost relatively little per pair.
For fifth-wheels, the front landing gear is a common weak point. The two legs sit close together, making them prone to side-to-side sway. Cross-bracing between the landing gear legs, similar to the X-shaped bracing you see on scaffolding, stiffens that connection and reduces the lateral wobble that travels through the whole rig when someone walks near the front.
Install Aftermarket Stabilizer Systems
If blocks and extra jacks don’t get you where you want, aftermarket bracing systems can make a dramatic difference. These work by creating rigid triangles between the ground and the trailer frame, which resist movement in multiple directions at once.
The SteadyFast system from Hanscom Enterprises is one well-known option. It uses three braces that connect footplates on the ground to the trailer frame: one brace angled diagonally across the front, one across the rear, and a third running at an angle from front to back. Together they combat rocking side to side, front to back, and diagonally. The braces mount permanently to the frame and deploy in under a minute by tightening three handles, so setup doesn’t add much time to your arrival routine.
For trailers with a 2-inch receiver hitch on the rear, MORryde makes a tripod-style hitch-mounted stabilizer that fans out to the ground and resists motion in multiple directions from that single mounting point. Fifth-wheel owners can also look at kingpin stabilizers, which brace the pin box where the trailer connects to the truck. These come in two-leg or three-leg versions, with three legs providing a fully triangulated support point that’s harder to rock.
Ground Surface Matters
Everything you do with jacks and braces works better on a firm surface. Gravel, packed dirt, and concrete are ideal. Soft grass, sand, or mud will let jack pads sink unevenly over time, gradually loosening your setup and reintroducing wobble. If you’re on soft ground, place wide pads or flat boards under every contact point to spread the load and prevent sinking. Interlocking stacker blocks are especially useful here because their broad footprint distributes weight across a larger area.
Check your jacks after the first night. Ground can compact or shift under load, especially after rain, leaving jacks that were snug at setup now hanging slightly loose. A quick re-tightening takes 30 seconds and keeps everything solid for the rest of your stay.
Combining Fixes for the Best Results
No single fix eliminates all movement. RVs are lightweight structures on flexible frames, and some slight flex is normal. But stacking several approaches together gets you close. A practical starting point: level the RV properly, place blocks under every stabilizer jack to minimize extension, crank the jacks snug without lifting the frame, and check them after settling overnight. That alone handles most of the shaking for most people.
If you still feel more movement than you’d like, adding a pair of jacks near the axles and installing a diagonal bracing system addresses the remaining flex. Owners who go this route consistently describe the difference as night and day, going from a trailer that visibly sways with every step to one where you can walk normally without feeling like you’re on a boat.