1. Product Overview
The Mishimoto Borne Off-Road Wheel Spacers are engineered to enhance vehicle stance, improve brake clearance, and optimize wheel fitment. Constructed from forged 6061-T6 aluminum, these hub-centric spacers provide a precise extension of the axle hub, ensuring secure and smooth operation. They are designed for vehicles with a 6x139.7 bolt pattern, M12x1.5 studs, and a 106 mm center bore, specifically compatible with Toyota Tacoma and 4Runner models.
Figure 1: Mishimoto Borne Off-Road Wheel Spacers (Blue)
Safety Information
WARNING: Improper installation of wheel spacers can lead to serious injury or death. Always follow these instructions carefully. If you are unsure about any step, consult a qualified automotive technician. Ensure all lug nuts are torqued to manufacturer specifications.
- Always use appropriate safety gear, including eye protection and gloves.
- Ensure the vehicle is securely supported on jack stands before working underneath.
- Never use an impact wrench for final torqueing of lug nuts.
- Regularly inspect wheel spacers and lug nuts for wear or damage.
2. Package Contents
Verify that all components are present before beginning installation:
- 2x Aluminum Wheel Spacers (with pre-installed studs)
- 12x Wheel Nuts (for securing the spacer to the hub)
Figure 2: Wheel Spacer with Pre-installed Studs
3. Specifications
| Feature | Specification |
|---|---|
| Material | Forged 6061-T6 Aluminum |
| Bolt Pattern | 6x139.7 |
| Thickness | 1.00 Inch (25.4 mm) |
| Stud Thread Pitch | M12x1.5 |
| Center Bore | 106 mm |
| Design | Hub-Centric |
| Finish | Anodized (Blue) |
| Stud Grade | Grade-12.9 Steel |
Figure 3: Forged Grain Structure for Enhanced Strength
4. Installation Instructions
Follow these steps carefully for proper and safe installation of your Mishimoto Borne Off-Road Wheel Spacers.
- Prepare the Vehicle:
- Park the vehicle on a flat, level surface.
- Engage the parking brake.
- Loosen the lug nuts on the wheel(s) to be removed, but do not remove them completely.
- Jack up the vehicle and secure it with appropriate jack stands. Ensure the vehicle is stable.
- Remove the lug nuts and then remove the wheel.
- Inspect the Hub:
- Clean the vehicle's hub surface thoroughly, removing any rust, dirt, or debris. A wire brush can be used.
- Ensure the wheel studs are in good condition and free from damage.
- Install the Wheel Spacer:
- Place the wheel spacer onto the vehicle's hub, ensuring it sits flush against the hub face. The hub-centric design should align perfectly.
- Apply a small amount of anti-seize lubricant to the threads of the vehicle's original studs.
- Install the provided wheel nuts onto the vehicle's original studs, securing the spacer to the hub.
- Tighten these nuts by hand, then use a torque wrench to tighten them in a star pattern to the vehicle manufacturer's specified torque for wheel lug nuts. Do not use an impact wrench for final torqueing.
- Install the Wheel:
- Place the wheel onto the newly installed wheel spacer's studs. Ensure the wheel sits flush against the spacer.
- Install your original lug nuts onto the spacer's studs.
- Tighten these nuts by hand, then use a torque wrench to tighten them in a star pattern to the vehicle manufacturer's specified torque for wheel lug nuts. Do not use an impact wrench for final torqueing.
- Lower the Vehicle:
- Carefully lower the vehicle until the wheels are just touching the ground.
- Perform a final torque check on all lug nuts with the vehicle fully on the ground.
- Remove jack stands and fully lower the vehicle.
- Post-Installation Check:
- Drive the vehicle for approximately 50-100 miles, then re-check the torque on all lug nuts (both those securing the spacer to the hub and those securing the wheel to the spacer). This is crucial for safety.
Figure 4: Wheel Spacer Mounted on Vehicle Hub
5. Maintenance
Regular maintenance ensures the longevity and safe operation of your wheel spacers:
- Periodic Torque Checks: Re-check the torque of all lug nuts (both spacer-to-hub and wheel-to-spacer) every 3,000-5,000 miles or during routine tire rotations.
- Visual Inspection: During torque checks, visually inspect the spacers for any signs of cracking, corrosion, or damage. Inspect the studs for any signs of stretching or damage.
- Cleaning: Keep the spacers clean from excessive dirt and debris, especially around the lug nuts and hub mating surfaces.
- Corrosion Protection: The anodized finish provides corrosion resistance, but avoid harsh chemicals that could damage the finish.
6. Troubleshooting
If you encounter any issues, refer to the following common problems and solutions:
- Vibration After Installation:
- Cause: Improperly torqued lug nuts, debris between mating surfaces, or incorrect hub-centric fitment.
- Solution: Re-check all lug nut torques. Remove wheels and spacers, clean all mating surfaces thoroughly, and re-install ensuring flush fitment. Verify the spacer is hub-centric for your vehicle.
- Wheel Not Sitting Flush:
- Cause: Debris on the hub or spacer face, or vehicle's original studs protruding past the spacer face.
- Solution: Clean all mating surfaces. If original studs protrude, they must be trimmed or the wheel must have cavities to accommodate them.
- Loose Lug Nuts:
- Cause: Insufficient initial torque, failure to re-torque after initial driving, or damaged studs/nuts.
- Solution: Immediately re-torque all lug nuts. If they continue to loosen, inspect studs and nuts for damage and replace if necessary. Always perform the 50-100 mile re-torque.
7. Warranty & Support
Lifetime Warranty
Mishimoto Borne Off-Road Wheel Spacers are backed by a signature Lifetime Warranty. This warranty covers defects in materials and workmanship for the lifetime of the product. For full details and to initiate a warranty claim, please visit the official Mishimoto website or contact customer support.
Customer Support
For technical assistance, installation questions, or warranty inquiries, please contact Mishimoto customer support:
- Website: www.mishimoto.com
- Email: Refer to the Mishimoto website for current contact information.
- Phone: Refer to the Mishimoto website for current contact information.
