6 Best Wheel Alignment Shims For Lifted Van Builds

After installing a lift kit, that familiar van handling often vanishes, replaced by flighty steering or uneven tire wear that eats through expensive rubber. Adding alignment shims is the unsung hero of the van build world, correcting the geometry that factory suspension parts can no longer manage once the vehicle height changes. Making the right choice here isn’t just about ride comfort; it is about ensuring that a fully loaded rig tracks straight and safely down the highway.

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SPC Performance 2-Piece Shim: Best Overall

The SPC Performance 2-Piece shim system stands out because of its ingenious design that allows for adjustments without completely dismantling the suspension assembly. By using a split-shim approach, you can dial in precise camber and caster changes, which is vital when a van’s weight fluctuates significantly between camping trips.

This product earns the top spot because it balances versatility with ease of installation. It is the gold standard for builders who want to fine-tune their alignment settings as they add more weight, such as heavy solar banks or extra water storage. If you prioritize long-term adaptability and precision, this is the system that belongs on your rig.

Moog K5250 Alignment Shim: Most Durable

When a van spends its life traversing washboard gravel roads or navigating rutted logging trails, suspension components take a beating. The Moog K5250 is engineered with heavy-duty construction that resists the crushing forces and vibrations that often cause cheaper, thinner shims to fail or shift over time.

Choosing this shim is a commitment to “set it and forget it” reliability. While it may lack the granular adjustability of multi-piece kits, it excels in maintaining its integrity under extreme structural stress. For those building a dedicated off-road adventure vehicle that prioritizes ruggedness above all else, Moog is the obvious choice.

Specialty Products 86250 Shim: Best Budget Pick

Not every van build demands high-end, micro-adjustable components, especially when a simple correction is all that is required to bring an alignment back into factory spec. The Specialty Products 86250 shim is a straightforward, no-nonsense solution that provides the necessary angle adjustments at a fraction of the cost of premium kits.

It is highly recommended for the budget-conscious builder who has added a modest lift and just needs to correct minor pull or camber issues. While it doesn’t offer the bells and whistles of the more expensive options, its simplicity is its greatest strength. It is a reliable, cost-effective fix that keeps your budget focused on more critical build components.

Agile Offroad Caster Corrector: For Sprinter Vans

Sprinter vans are notoriously sensitive to suspension geometry changes, and standard universal shims often fail to address the specific caster needs of these long-wheelbase platforms. The Agile Offroad Caster Corrector is specifically engineered to improve steering return and straight-line stability, which is often lost after installing taller tires or a lift.

This product isn’t just a generic spacer; it is a specialized tool designed to restore the “self-centering” feel of the steering wheel. If you find your Sprinter wandering on the highway or feeling twitchy at high speeds, this kit is the industry-recognized solution. For Sprinter owners, skipping this specific correction is often a mistake that leads to driver fatigue on long hauls.

Dorman Steel Shim Assortment: Best for DIYers

For the DIYer who is still in the trial-and-error phase of their suspension setup, having a variety of thicknesses on hand is invaluable. The Dorman Steel Shim Assortment provides a range of sizes that allow for immediate adjustments during the build process, preventing multiple trips to the parts store.

This set is essentially an alignment lab in a box, making it perfect for the builder who wants to experiment with different ride heights or test various clearance configurations. While these shims are best used for initial tuning rather than permanent, high-stress applications, they are an essential asset for any well-equipped home workshop.

Eibach Pro-Alignment Kit: For Performance Rigs

If your van build includes upgraded shocks, heavy-duty springs, and a focus on road-holding performance, standard hardware might feel like a weak link. The Eibach Pro-Alignment Kit is designed for enthusiasts who demand the same level of precision and quality from their alignment shims as they do from their primary suspension components.

These shims are finished with high-quality coatings that prevent corrosion, even in damp or salty environments. They offer an exceptional fit and finish that pairs perfectly with high-end performance rigs where tolerances are tighter and performance consistency is non-negotiable. If you have invested heavily in top-tier suspension parts, this kit is the right way to complete the system.

Do You Actually Need Alignment Shims?

Many builders assume that once a lift kit is installed, a standard wheel alignment at a local shop will resolve all issues. However, standard shops often lack the range of adjustment necessary to compensate for the significant geometry changes introduced by lifted suspension. If the alignment technician cannot bring your camber or caster into the green, shims are the only way to bridge the gap.

Neglecting these alignment angles leads to “feathering” on tires, where the tread wears unevenly, eventually forcing you to replace expensive all-terrain tires thousands of miles early. If the van pulls significantly to one side or the steering feels floaty after a lift, you definitely need to address the alignment geometry. Shims provide the mechanical correction required to return the van to stable, predictable handling.

Finding the Right Shim Degree for Your Lift

Selecting the correct degree for a shim is not a guessing game; it requires an actual alignment measurement from a qualified shop. A common error is buying a “set” of shims without knowing how much correction the specific suspension geometry actually requires. Always have the vehicle measured first, then purchase the shim that matches the needed degree of change.

Keep in mind that adding shims to one side can affect the overall balance of the suspension if the weight distribution of the van is uneven. It is essential to account for the “van life load”—the weight of your cabinets, batteries, and water tanks—when finalizing these settings. An alignment done while the van is empty will be entirely inaccurate once the rig is fully outfitted for the road.

Steel vs. Composite Shims: Which Is Better?

The debate between steel and composite shims often comes down to durability versus convenience. Steel shims provide superior structural integrity, ensuring that the alignment settings do not settle or deform under the immense weight of a fully loaded camper van. They are the preferred choice for rigs that see high mileage and constant suspension stress.

Composite or aluminum shims, while lighter and easier to machine, can be prone to fatigue over time in high-load applications. However, they are often easier to install and offer a higher level of precision for fine-tuning. For most heavy van builds, steel remains the safer, more durable bet for long-term reliability.

Installing Shims: DIY vs. Pro Alignment Shop

While a capable home mechanic can install alignment shims, getting them perfectly dialed in requires specialized tools that only a professional shop possesses. The shims must be placed under the correct components, often requiring the suspension to be partially disassembled and re-torqued to exact manufacturer specifications. Without a professional alignment rack, it is nearly impossible to confirm if the shims have achieved the desired result.

The most efficient approach is to handle the installation of the shim yourself—if you are comfortable with suspension work—and then take the vehicle to a professional shop for the final alignment and verification. This saves you labor costs while ensuring the safety and accuracy of the end result. Never assume a “good enough” install is safe; your suspension is the most critical safety system in your build.

Investing in high-quality alignment shims is one of the most cost-effective ways to protect your van’s tires and ensure a smooth, stable driving experience. By carefully selecting the right product for your specific platform and ensuring it is installed with professional precision, you turn a potential handling nightmare into a reliable road companion. Take the time to dial in the geometry, and the miles ahead will be far more enjoyable.