Unsure of what size spacer will work best for you? This professional kit includes 1mm, 2.5mm, 5mm, 10mm, and 15mm spacers with wheel studs and nuts for you play with. These are not the same spacers that we sell and they cannot be used to drive on. But with the studs installed the car can be lowered to the ground and rolled to check for clearances. These test fit spacers are drilled to fit the standard BMW 5x120 bolt pattern as well as 4-lug 4x100 (and VW/Audi bolt patterns too). You can stack spacers to achieve the perfect clearance. When you're ready call us to order the spacers you need (we make 3mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, 25mm, and 30mm spacer thicknesses).

This kit is for purchase only. It's perfect for shops or racecars where changing wheels or brakes is common. We also have kits that are available for rent.

These spacers are not for driving on. They lack the hubcentric lip that BMW wheels are designed to work with. Driving on studs alone will lead to a failure.

Upgrade your BMW's wheel bolts with ECS Titanium Wheel Bolts for superior performance and durability. These bolts are 50% lighter than steel bolts, reducing rotational mass and enhancing vehicle agility. CNC'd from annealed titanium alloy, they meet class 10.9 fastener proof load requirements without signs of fatigue or failure. With precise specifications and a conical seat design, they ensure a perfect fit and optimal performance for your BMW.

• 50% lighter than steel bolts, reducing rotational mass
• CNC'd from annealed titanium alloy for durability
• Conical seat design for perfect fitment
• Resistant to rust and corrosion for long-term reliability

Upgrade your BMW's wheel setup with ECS Tuning's Extended Wheel Bolts. Available individually or with matched spacers for easy fitment, these bolts meet strict ISO 898 class 10.9 standards for mechanical and physical properties. Lab-tested to ensure compliance, they offer reliable and durable performance. The 14mm diameter, 1.25mm thread pitch, and 43mm length make these bolts ideal for various applications, providing a secure fit for your wheels.

• Extended wheel bolts for BMW
• Available individually or with matched spacers
• Meets ISO 898 class 10.9 standards
• Lab-tested for compliance and reliability
• 14mm diameter, 1.25mm thread pitch, 43mm length
• Ideal for wheel spacer applications

ECS Tuning lab tests its fasteners to ensure they meet all 10.9 specifications.

Wheel Bolt specs:

• Diameter - 14mm
• Thread Pitch - 1.25mm
• Length - 27mm

If installing wheel spacers, measure your current wheel bolt's length and add the width of your spacer to determine correct extended bolt length. 

Enhance wheel replacement efficiency on your BMW with a stud conversion kit, facilitating quicker and easier wheel changes. This comprehensive kit includes:

• Conical Seat Lug Nuts (20)
• 75mm Wheel Studs (20)

The installation of these studs provides a permanent wheel-hanging solution, saving time and reducing hassle during wheel changes. By simply screwing in the supplied studs, you'll be ready to go.

Benefits of using wheel studs instead of wheel bolts:

• Some racing regulations mandate wheel studs for enhanced wheel-to-hub contact, ensuring added safety.
• Wheel studs accommodate various spacer widths, eliminating the need for custom bolt lengths when using spacers.
• Simplifies wheel installation; the studs act as wheel hangers while nuts secure the wheel in place.
• Reduces wear on wheel hubs as wheel studs remain in the hub, unlike constantly removed and installed wheel bolts.
• Facilitates quick and easy tire changes as wheel studs stay in place.

Note: Use thread-locking compound during installation and torque studs to 15Nm for optimal performance.

Upgrade your BMW's wheel system with this stud conversion kit for improved convenience and functionality.

Adapt 5x112 66.6CB wheels to your favorite BMW chassis! Made in the USA and features a life time warranty.

Expand the wheel selection for your vehicle to run any wheel you want with these ECS wheel adapters! With hub centric adapters, you can run those wheels you've been dying to have but couldn't bolt on before.

This set of wheel adapters allows you to fit 5x112 wheels with a 66.6mm center bore on to your 5x120 (M14x1.25) hub. These are great to run the new G-chassis BMW wheels and much more on your favorite classic BMW.

Select your adapter thickness and optional lug nuts, you'll need two complete kits for a set of four wheels

72.56CB inner hub and 66.6CB outer hub.
Hubcentric for a true, vibration-free mount.
Lightweight 6061 T6 aluminum keeps unsprung weight low.
Black anodized for hardness and corrosion resistance.
Low profile 10.9 hardness mounting bolts.
Studs instead of bolts for quicker wheels changes.
CNC machined to exacting tolerances.
Ideal for adding wheel clearance on cars with oversized brakes.
Made in the USA!
Lifetime Warranty.

Wheel Stud Conversion Kit - Half Set: Upgrade Your BMW's Performance

• Allows for easier and quicker wheel changes
• Provides a more secure and reliable wheel mounting solution
• Reduces the risk of stripped lug bolts
• Compatible with various BMW models

Enhance your BMW's performance with the Wheel Stud Conversion Kit - Half Set. This kit facilitates easier and quicker wheel changes while offering a more secure and reliable wheel mounting solution compared to traditional lug bolts. By reducing the risk of stripped lug bolts, it ensures a safer driving experience for BMW owners. Plus, it is compatible with various BMW models, ensuring versatility and ease of installation.

Unsure of what size spacer will work best for you? This professional kit includes 1mm, 2.5mm, 5mm, 10mm, and 15mm spacers with wheel studs and nuts for you play with. These are not the same spacers that we sell and they cannot be used to drive on. But with the studs installed the car can be lowered to the ground and rolled to check for clearances. These test fit spacers are drilled to fit the standard BMW 5x120 bolt pattern as well as 4-lug 4x100 (and VW/Audi bolt patterns too). You can stack spacers to achieve the perfect clearance. When you're ready call us to order the spacers you need (Turner spacers come in 3mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, 25mm, and 30mm spacer thicknesses).

These spacers are not for driving on. They lack the hubcentric lip that BMW wheels are designed to work with. Driving on studs alone will lead to a failure.

Two ways to buy -

• Own. Just as it says, you buy this kit to own. Perfect for shops or race teams that change wheels or brake components often. For shops you can measure wheel clearance and order the correct spacers the first time around (no wasting inventory or paying return shipping). Note: Kits purchased to Own are not returnable for refunds.
• Rent. Pay the full price but get $110 as a store credit when you return the kit. We keep a modest $19.95 fee for the service. Perfect for DIY and enthusiasts who only need the Test Kit once. Use your store credit to purchase your spacers (or anything else from our catalog).

Wheel Spacer FAQ:
How to measure for wheel spacers
Wheel spacer encyclopedia

Experience the ECS Tuning Wheel Spacer Fitment Kit Rent & Return Program

Explore the ECS Tuning Wheel Spacer Fitment Kit Rent & Return program, designed for Euro vehicles, offering the flexibility to experiment with wheel spacers hassle-free. Test fit various thickness spacers and bolt patterns to optimize your wheel fitment without commitment.

• Easy FedEx return with included shipping label (available for contiguous US customers)
• Receive a $110.00 account credit upon returning the complete fitment kit
• Contains 5 different thickness spacers for test fitting
• Accommodates 5 different bolt patterns: 4X100, 5X100, 5X112, 5X120, 5X130mm
• Each kit includes various nuts and studs for compatibility with different applications
• Designed for test fitting purposes only; cannot be used for driving

*$110.00 account credit will be applied on receipt of complete, serviceable Wheel Spacer Fitment Kit. Partial credit may be issued in the event of an incomplete kit.

**Vehicles with pre-installed wheel studs or stud conversions will need studs removed before test-fit as the spacers do not have all lug holes available**

Upgrade your BMW race car with a stud conversion kit from [Brand Name] for enhanced strength, safety, and improved pit stop times. Even for non-race cars, stud conversions streamline wheel installation and removal, eliminating the need to align holes before threading lug bolts.

• Enhanced strength and safety
• Improved pit stop times
• Simplified wheel installation and removal
• Versatility with extended length wheel studs
• Reduced wear on hub threads
• Long-term durability and safety
• Simplified maintenance and improved efficiency