The MMX Performance BMW 5×120 Hubcentric Wheel Spacer Kit increases track width on E-Series BMWs, moving the wheel outward within the arch. Three widths are offered, 12mm, 15mm and 18mm, each sold in pairs so front and rear can be specified independently.

Each spacer is machined from 7075-T6 aerospace aluminum and finished in black anodizing. The bolt pattern is 5×120 with an M12x1.5 wheel bolt thread, matching the BMW E-Series specification.

The design is hubcentric. The spacer locates on the factory hub register and reproduces that register on its outer face, so the wheel is centered by the hub rather than by the wheel bolts. This is the function that distinguishes a hubcentric spacer from a bolt-centric one.

Ten extended-length wheel bolts are supplied with each pair, five per wheel, in the length correct for the spacer width ordered. The additional track width also creates clearance behind the wheel for big brake kits and aftermarket suspension components.

The anodized finish requires specific care. Clean the spacers with pH-neutral, non-abrasive products only. Acidic wheel cleaners, solvent-based products and strong commercial chemicals such as TFR will attack the anodizing.

Product Details

• Hubcentric wheel spacers for BMW E-Series applications
• 5×120 bolt pattern with M12x1.5 wheel bolt thread
• Available in 12mm, 15mm and 18mm widths
• Machined from 7075-T6 aerospace-grade aluminum
• Black anodized finish
• Locates on the factory hub register for wheel centering
• Includes ten extended-length wheel bolts per pair
• Creates clearance for big brake kits and aftermarket suspension components
• Sold in pairs

Available Configurations

• MMR37-0212: 12mm per side, 24mm total track increase
• MMR37-0215: 15mm per side, 30mm total track increase
• MMR37-0218: 18mm per side, 36mm total track increase

Care and Installation

• Clean with pH-neutral, non-abrasive products only
• Avoid acidic and solvent-based wheel cleaners
• Do not use harsh commercial wash chemicals such as TFR
• Ensure the spacer seats flat against both the hub and the wheel before torquing
• Check wheel and tire clearance at full steering lock after installation