6 Best Heavy Duty Leveling Shims For Uneven Field Surfaces

Pulling into a scenic, unpaved campsite often reveals a frustrating reality: the ground is rarely as flat as the brochure suggested. Achieving a level rig is not just about comfort, but essential for the proper functioning of RV refrigerators and slide-out mechanisms. Investing in the right leveling shims transforms a slanted, stressful site into a stable base for your next adventure.

Disclosure: This site earns commissions from listed merchants at no cost to you. Thank you!

Andersen Camper Levelers: Best Overall

The Andersen Camper Leveler is the gold standard for those who value precision and ease of use. By driving onto the curved wedge, the rig elevates incrementally until perfectly level, at which point the wheel is locked into place with the included chock. This system eliminates the guesswork of stacking blocks or playing a back-and-forth game with manual shims.

Because the system allows for infinite adjustment within the height range, it is ideal for campers who frequently visit primitive sites with extreme slope variations. It saves significant time during setup, allowing more daylight for setting up camp or exploring the local trails. If you prioritize speed and exactness, this is the most reliable tool in the kit.

Lynx Levelers RV Blocks: Best for Stacking

Lynx Levelers are the industry standard for the modular, interlocking approach to vehicle stabilization. These high-density plastic blocks snap together like puzzle pieces, allowing you to build a custom platform that accommodates both height and the length of a tire’s footprint. Their lightweight design makes them easy to store, even in compact pass-through compartments.

These are particularly well-suited for travelers who navigate varied terrain, ranging from loose gravel to packed dirt. Because they are modular, they can be spread out or stacked to bridge dips in the ground that a single ramp simply cannot handle. If versatility and portability are your primary drivers, Lynx blocks are the workhorse you need.

Camco FasTen Leveling Blocks: Best Value

Camco FasTen blocks offer a straightforward, cost-effective solution for those who want a proven design without the premium price tag. The interlocking grid system is simple to deploy and compatible with most common tire sizes. They provide a solid, durable surface that distributes weight effectively across soft ground.

While they may not offer the proprietary curve of high-end wedges, they excel in basic leveling applications on reasonably flat, developed campsites. They are a sensible choice for weekend warriors or those who want a reliable backup system that does not break the bank. When budget meets functionality, these blocks provide a no-nonsense path to a level rig.

Beech Lane Camper Leveler: Best Heavy Duty

The Beech Lane Camper Leveler is engineered specifically for larger, heavier travel trailers that demand extra structural integrity. Built with reinforced polymers, these levelers can handle significantly higher weight capacities than standard plastic wedges without flexing or cracking under pressure. They are the clear choice for full-time RVers or those with oversized rigs.

Beyond mere strength, the design features a non-slip textured finish that grips the tire, preventing the creeping that often occurs during the leveling process. The setup is remarkably efficient, essentially turning a two-person job into a one-person task. If your rig sits on the heavier end of the scale, do not compromise; get the strength required to keep it secure.

Carmtek Camper Leveler Kit: Best Dual Axle

Dual axle trailers present a unique challenge, as standard levelers often lack the clearance or reach to accommodate the spacing between tires. The Carmtek kit solves this by offering a robust wedge system specifically shaped to fit between and under the tandem wheels. This ensures both wheels are supported simultaneously, which is critical for preventing frame stress.

This kit provides the stability required to keep a multi-axle rig from swaying while inside. It is a comprehensive package that includes everything needed for a quick, balanced setup on uneven terrain. For those towing a dual-axle travel trailer or fifth wheel, this kit is the definitive solution to avoid the headaches of manual block alignment.

Hopkins 08200 RV Leveler: Best Ramp Style

The Hopkins 08200 is a classic ramp-style leveler that prioritizes simplicity and high-visibility. The stepped design allows the driver to see exactly which height notch they are hitting, which is incredibly helpful when working without a spotter. It is a sturdy, single-piece unit that requires zero assembly or complex positioning.

This leveler is best for those who prefer a traditional, set-it-and-forget-it approach to stabilization. Its solid construction ensures it won’t slide on hard-packed ground or concrete. If you want a straightforward tool that performs reliably every time you hit the park, this ramp-style option is a solid investment in simplicity.

How to Choose the Right Shims for Your Rig

When selecting your leveling gear, start by calculating your rig’s gross vehicle weight rating (GVWR) and confirming that the shims are rated to handle that weight per tire. High-profile rigs require taller stacks or higher-wedged profiles to compensate for steep grades. Low-clearance rigs, conversely, may require thinner blocks to avoid dragging or bottoming out during the approach.

Consider the surface conditions where you typically camp most often. If you frequent muddy or sandy forest roads, look for blocks with a larger footprint to prevent them from sinking into the substrate. If you primarily use paved or gravel pads, high-traction materials are more important than surface area.

Assessing Uneven Ground and Soil Conditions

Before deploying your leveling system, perform a quick inspection of the site to ensure the ground is firm enough to support the weight of the rig. If the ground is soft or spongy, the best leveler in the world will eventually sink, leaving your rig slanted by morning. Use large, flat base pads beneath your levelers to spread the load and prevent shifting.

Always account for potential drainage issues, especially if rain is in the forecast. Avoid placing your levelers in low-lying depressions where water will pool, as this turns solid dirt into a slick, unstable mess. A moment spent scouting the ground ensures your setup remains stable regardless of the elements.

Understanding Weight Capacity and Materials

Never mistake plastic leveling blocks for permanent supports; they are designed for the act of leveling and temporary stabilization. Check the manufacturer’s maximum weight capacity, keeping in mind that the force exerted on a wedge while driving onto it is often higher than the static weight of the parked rig. If you are near the upper weight limit, opt for heavy-duty resins or metal-reinforced options.

Ultraviolet (UV) degradation is a real concern for gear left out in the sun for extended periods. High-quality leveling blocks are treated to resist brittleness, but storing them out of direct sunlight when not in use significantly extends their lifespan. Always inspect your gear for hairline cracks after a long season, as structural fatigue is common in plastic components.

Essential Safety Tips for Leveling Campers

Safety begins with the tow vehicle and the application of the parking brake before anyone exits the rig. If you are leveling a travel trailer, always use wheel chocks on the opposite side to prevent any rolling, even on seemingly flat ground. Never crawl under or place limbs near the wheels while the rig is being raised or lowered.

Establish a clear, standardized set of hand signals if you are working with a spotter. If you are working alone, use a bubble level mounted near the driver’s side or rely on high-visibility markers on your leveling gear. A methodical approach, performed calmly and deliberately, is the best way to ensure both you and your equipment finish the trip in one piece.

Properly leveling your rig is the foundation of a great camping experience, allowing you to focus on the outdoors rather than the slope of your floor. By matching your equipment to your rig’s specific needs and taking the time to scout your site correctly, you gain the confidence to park anywhere with ease. Choose your gear wisely, secure your rig, and spend more time out on the trail.