Wheel spacers create an additional clearance between your wheel and the vehicle hub. An ideal distance between your car’s wheels quite actually makes it more stable. They also increase the traction during cornering and can allow you to add larger wheels. You can also add larger brake kits, which is a great safety upgrade especially if you plan to take your widebody car onto a track. Installing wheel spacers is one of the easiest and most cost-effective options to get flush the fender flares. Properly filled the wheel arches can really make your car look wonderful. A wheel spacers install is easy work that has a good effect on your driving experience. If you’re ready to install your wheel spacers, the instructions below will help you walk through each step.

Before Installing Wheel Spacers

First of all, make sure the wheel spacers you’ve chosen are the right pattern for your vehicle, including vehicle bolt pattern, wheel bolt pattern, thread size, spacer thickness, and center bore. There are usually two types of spacers: One type simply slides into the hub and comes with its own lug studs and nuts, while the other type bolts to the vehicle hub with another set of extended wheel bolts. BONOSS BLA Series Wheel Spacers are the second type mentioned above. Hub-centric wheel spacers are highly recommended. If your wheels are lug-centric, hub-centric spacers are available to transform them into hub-centric wheels.

Steps to Install Wheel Spacers

Park the car in a safe, well lit, level area, leave the wheels in contact with the ground. Wheel spacers installation is quite simple, almost can be done in an afternoon. You just need to prepare some hand tools and a way to lift your car.

Required Tools: Car Lift, Lug Socket, Torque Wrench, Wheel Hanger (Optional), Impact Wrench (Optional), Degreaser (Optional), Emery Cloth (Optional), Towel (Optional)

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Step 1: Loosen All the Stock Bolts

Loosen all the stock bolts that fasten the wheel to the hub in the sequence of a “Star” shape pattern but do not fully remove them. Step on the brake pedal to prevent any chance of the vehicle rolling. Besides, it’s recommended to use the resistance of the tire against the ground to get enough torque to turn the lugs. Otherwise, you may meet the problem that the wheel would just spin if you try to loosen the bolts when it’s lifted.

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Step 2: Lift the Car

If you don’t have access to a car lift, a jack and a good set of jack stands will work just fine as well. But, with a car lift, your work will become easier. Use the car lift to raise the vehicle slowly to a height enough to lift a single wheel completely off the ground. Remember to make sure the car lift is properly supporting the vehicle.


Step 3: Take the Wheel Off

Finish removing all the lug bolts on the raised wheel. Hold the wheels with your hands to prevent a sudden drop and slowly slide the wheel off the hub and set it to the side for now.BONOSS-Forged-Active-Cooling-Wheel-Spacers-for-Mercedes-Benz-G500-Install-Steps (4)

Step 4: Clean the Wheel Hub

Now, it is a good time to do some cleaning for your vehicle hub. Spray degreaser on the axle hub and the rotor hat and wipe them down with the emery cloth. If the hub is dirty, rusted, or pitted use the emery cloth to clean up the surface. Wipe down the entire hub surface with a towel, ensuring it is clean and smooth.

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Step 5: Install the Wheel Spacer in Place

Slide the BONOSS BLA Series Wheel Spacer on the axle hub and align the holes in the spacer to the thread holes, and ensure that the wheel spacer is firmly seated and flush against the hub.

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Step 6: Thread in the Matching Wheel Studs

Use the matching lug studs to tighten the wheel spacer to the axle hub. Carefully turn the lug studs by hand to ensure they are easy to thread in to avoid cross-thread. Tighten by hand, but do not torque the lug wheel studs completely. Just put them in place and fasten them a bit.

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Step 7: Torque the Matching Lug Studs to Spec

Use a torque wrench with the manufacturer-recommended torque specification to snug up the lug studs in a star pattern. Do not overtighten the studs. If you meet problems that the hubs roll while tightening the studs, you can ask an assistant to press the brake pedal to prevent the hub from rolling.

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Step 8: Install a Wheel Hanger

A wheel hanger is optional but we highly recommend it. Thread it in one of the holes and it makes the wheel alignment easier. If you meet problems that the hubs roll while threading the hanger, you can ask an assistant to press the brake pedal to prevent the hub from rolling.

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Step 9: Remount the Wheel

Slide the wheel onto the wheel spacer. Secure the wheel with the stock lug bolts by hand to the new lug nuts embedded in the wheel spacer and make it seat firmly against the wheel spacer, but do not torque the lug bolts fully. Just put them in place and fasten them a bit. Repeat this step with the rest of the stock wheel bolts.

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Step 10: Torque the Stock Wheel Bolts to Spec

Use a torque wrench with the manufacturer-recommended torque specification to snug up the stock lug bolts in a star pattern to ensure that the load is applied evenly. But do not overtighten the bolts.

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Step 11: Repeat Steps 1-10 for the Remaining Wheels

Now, you’ve completed the installation for one wheel! Repeat the same process for the rest of the wheel.


Step 12: Carefully Lower the Vehicle

Use the car lift to lower the vehicle slowly until the wheels are in full contact with the ground. And, it’s recommended to take a test ride to do a quick check for vibration or wobbling. Also, experience a new handling performance.


Follow-up Safety Information

  • Wheel spacers are a safe mod for your vehicle as long as you use high-quality spacers and install them properly.
  • This instruction is provided as a general guideline only and may not be specific to your vehicle. Please always follow the vehicle manufacturer’s installation instructions.
  • DO NOT ATTEMPT to install, service, or replace your wheels, tires, or wheel spacers unless you are a professional or under the guidance of a Qualified Mechanic.
  • NEVER operate on or under a vehicle that is raised only by a jack, as it has chances to fall or tip, leading to serious injury.
  • Double-check that all lug nuts are tightened to the manufacturer’s specification with a properly calibrated torque wrench in a crisscross, star pattern.
  • CHECK and CONFIRM the proper alignment and function of your wheels and tires before driving.
  • EXAMINE the performance of your wheels, tires, and wheel spacers in a controllable environment before driving.
  • NEVER operate the vehicle if wheels, tires, or wheel spacers are damaged or worn.
  • It is always a great idea to regularly inspect the tightness of the lug nuts, especially soon after installation. Give the spacers another check after 100 miles of driving to make sure they’re still in place well and the lug nuts are tight.