Why choose hubcentric BMW F chassis wheel spacers over non-hubcentric alternatives?

Hubcentric BMW F chassis wheel spacers center the wheel on the hub bore rather than the wheel bolts. The MMX spacers are machined with a 72.6mm center bore that matches the F-chassis hub diameter exactly, ensuring the wheel is correctly centered and all lateral loads pass through the hub rather than the bolts. Non-hubcentric spacers leave a gap between the spacer center bore and the hub, which can cause vibration at speed and places additional stress on the wheel bolts.

What width of BMW F chassis wheel spacer should I choose?

The correct width depends on your goal. 12mm (24mm per axle) is the most conservative option — it brings the wheel flush with or just inside the arch on most F-chassis models. 15mm (30mm per axle) suits most flush or aggressive fitment targets. 18mm (36mm per axle) is for a pronounced stance or for clearing large aftermarket brake calipers. Check your current wheel offset and measure the gap to the arch liner and suspension components at full lock before deciding.

Are extended wheel bolts included?

Yes. Each pair of MMX BMW F chassis wheel spacers includes ten extended-length grade 10.9 carbon steel black wheel bolts. Grade 10.9 exceeds OEM specification, and the extended length is correctly sized for the spacer thickness — a critical safety requirement that many budget kits omit entirely, requiring you to source bolts separately.

Why 7075-T6 aluminum and not 6061?

7075-T6 is an aerospace-grade alloy with tensile strength significantly higher than the 6061 alloy used in most aftermarket spacers. It is lighter and stronger, making it the correct material for a structural component that operates under sustained lateral loads. For track use or high-performance road driving, 7075-T6 is the appropriate specification.

Will these F chassis wheel spacers affect steering feel or handling?

Increasing track width with a hubcentric spacer improves lateral stability and cornering response by widening the stance of the vehicle. Because the MMX spacers are hubcentric, there is no vibration introduced by an off-center fitment. Check arch clearance at full lock before fitting any spacer, particularly on lowered vehicles.

Why choose hubcentric BMW F chassis wheel spacers over non-hubcentric alternatives?

Hubcentric BMW F chassis wheel spacers center the wheel on the hub bore rather than the wheel bolts. The MMX spacers are machined with a 72.6mm center bore that matches the F-chassis hub diameter exactly, ensuring the wheel is correctly centered and all lateral loads pass through the hub rather than the bolts. Non-hubcentric spacers leave a gap between the spacer center bore and the hub, which can cause vibration at speed and places additional stress on the wheel bolts.

What width of BMW F chassis wheel spacer should I choose?

12mm (24mm per axle) is the most conservative option — it brings the wheel flush with or just inside the arch on most F-chassis models. 15mm (30mm per axle) suits most flush or aggressive fitment targets. 18mm (36mm per axle) is for a pronounced stance or for clearing large aftermarket brake calipers. Check your current wheel offset and measure the gap to the arch liner and suspension components at full lock before deciding.

Are extended wheel bolts included with the BMW F chassis wheel spacers?

Yes. Each pair of MMX BMW F chassis wheel spacers includes ten extended-length grade 10.9 carbon steel black wheel bolts. Grade 10.9 exceeds OEM specification, and the extended length is correctly sized for the spacer thickness — a critical safety requirement that many budget kits omit entirely, requiring separate bolt sourcing.

Why 7075-T6 aluminum rather than 6061?

7075-T6 is an aerospace-grade alloy with tensile strength significantly higher than the 6061 alloy used in most aftermarket spacers. It is lighter and stronger, making it the correct material for a structural component operating under sustained lateral loads. For track use or high-performance road driving, 7075-T6 is the appropriate specification.

Will the BMW F chassis wheel spacers affect steering feel or handling?

Increasing track width with a hubcentric spacer improves lateral stability and cornering response by widening the vehicle's stance. Because the MMX spacers are hubcentric, there is no vibration introduced by an off-center fitment. Check arch clearance at full lock before fitting, particularly on lowered vehicles.

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Description

MMX Hubcentric Wheel Spacers for BMW F-Chassis Models (12mm, 15mm, 18mm)

BMW F chassis wheel spacers from MMX Performance are hubcentric, precision-machined from aerospace-grade 7075-T6 aluminum, and available in 12mm, 15mm, or 18mm widths to suit F-chassis BMW models from the 1 Series through to the M6 and X6 M. The hubcentric design incorporates a precision-machined 72.6mm center bore that matches the BMW F-chassis hub diameter exactly, ensuring the wheel is centered on the hub rather than the bolts, the critical difference that separates MMX spacers from non-hubcentric alternatives and eliminates the vibration risk that comes from an uncentered fitment. 7075-T6 aluminum is a significant step above the 6000-series alloys used in many aftermarket spacers: higher tensile strength, lower weight, and greater resistance to deformation under the sustained lateral loads of spirited driving. Each pair of BMW F chassis wheel spacers comes complete with ten extended-length grade 10.9 carbon steel black wheel bolts, an inclusion most budget kits omit so the spacer can be fitted safely from the moment the package arrives. The black anodized finish resists corrosion and prevents the spacer from bonding to the hub face over time, while machined cutouts on the rear face allow for clean removal without damage after extended use. Available in 12mm (24mm per axle), 15mm (30mm per axle), or 18mm (36mm per axle).

Why Hubcentric?

The MMX BMW F chassis wheel spacers are engineered with a precision-machined alloy spigot that ensures exact wheel alignment and full engagement with the vehicle hub. This eliminates the vibration and instability risk associated with non-hubcentric spacers, which center the wheel on the bolt holes rather than the hub center. For high-performance or track use, hubcentric fitment is the only correct approach.

Features

Hubcentric design with precision-machined 72.6mm center bore for vibration-free fitment
Aerospace-grade 7075-T6 aluminum — stronger and lighter than 6000-series alternatives
Available in 12mm, 15mm, and 18mm widths
Ten extended-length grade 10.9 carbon steel black wheel bolts included per pair
Black anodized finish resists corrosion and prevents hub bonding
Machined rear cutouts for clean removal after extended use
Increases track width for improved stability and cornering response
Creates clearance for larger brake calipers or coilovers
Delivers a flush, aggressive fitment within the wheel arch
Laser-etched MMX branding

Applications

BMW 1 Series: F20, F21 | 2012-2019
BMW 2 Series: F22, F23 | 2014-2021
BMW 3 Series: F30, F31, F34 | 2012-2019
BMW 4 Series: F32, F33, F36 | 2013-2020
BMW 5 Series: F07, F10, F11 | 2011-2017
BMW 6 Series: F06, F12, F13 | 2011-2018
BMW 7 Series: F01, F02, F03, F04 | 2008-2015
BMW M2: F87 | 2016-2018
BMW M2 Competition: F87 | 2018-2021
BMW M2 CS: F87 | 2020
BMW M3: F80 | 2014-2018
BMW M3 Competition: F80 | 2016-2018
BMW M3 CS: F80 | 2018
BMW M4: F82, F83 | 2014-2020
BMW M4 Competition: F82, F83 | 2017-2020
BMW M4 CS: F82, F83 | 2017
BMW M4 GTS: F82, F83 | 2016
BMW M5: F10 | 2011-2016
BMW M6: F06, F12, F13 | 2012-2018
BMW X3: F25 | 2011-2017
BMW X4: F26 | 2014-2018
BMW X5: F15 | 2013-2018
BMW X5 M: F85 | 2015-2018
BMW X6: F16 | 2015-2019
BMW X6 M: F86 | 2015-2019

Care and Maintenance

Use only pH-balanced, non-abrasive cleaners. Avoid acidic or alkaline products.
Wash with mild soap and water only. Do not use solvent-based or abrasive chemicals.
Avoid commercial car washes that use harsh chemicals such as traffic film remover (TFR)
Before installation, ensure the spacer sits flat against the hub and wheel, and check wheel arch clearance at full left and right lock

Notes

Sold as a pair. This item is non-returnable.
Images are generic; actual product may vary

Frequently Asked Questions

Why choose hubcentric BMW F chassis wheel spacers over non-hubcentric alternatives? Hubcentric BMW F chassis wheel spacers center the wheel on the hub bore rather than the wheel bolts. The MMX spacers are machined with a 72.6mm center bore that matches the F-chassis hub diameter exactly, ensuring the wheel is correctly centered and all lateral loads pass through the hub rather than the bolts. Non-hubcentric spacers leave a gap between the spacer center bore and the hub, which can cause vibration at speed and places additional stress on the wheel bolts.
What width of BMW F chassis wheel spacer should I choose? 12mm (24mm per axle) is the most conservative option it brings the wheel flush with or just inside the arch on most F-chassis models. 15mm (30mm per axle) suits most flush or aggressive fitment targets. 18mm (36mm per axle) is for a pronounced stance or for clearing large aftermarket brake calipers. Check your current wheel offset and measure the gap to the arch liner and suspension components at full lock before deciding.
Are extended wheel bolts included with the BMW F chassis wheel spacers? Yes. Each pair of MMX BMW F chassis wheel spacers includes ten extended-length grade 10.9 carbon steel black wheel bolts. Grade 10.9 exceeds OEM specification, and the extended length is correctly sized for the spacer thickness a critical safety requirement that many budget kits omit entirely, requiring separate bolt sourcing.
Why 7075-T6 aluminum rather than 6061? 7075-T6 is an aerospace-grade alloy with tensile strength significantly higher than the 6061 alloy used in most aftermarket spacers. It is lighter and stronger, making it the correct material for a structural component operating under sustained lateral loads. For track use or high-performance road driving, 7075-T6 is the appropriate specification.
Will the BMW F chassis wheel spacers affect steering feel or handling? Increasing track width with a hubcentric spacer improves lateral stability and cornering response by widening the vehicle’s stance. Because the MMX spacers are hubcentric, there is no vibration introduced by an off-center fitment. Check arch clearance at full lock before fitting, particularly on lowered vehicles.

About MMX Performance

MMX Performance is a UK-based specialist in performance parts for BMW and MINI vehicles, crafting high-quality upgrades that blend precision engineering, rigorous testing, and motorsport heritage. Driven by enthusiast culture, MMX designs its products in the UK and puts them through track validation to ensure durability, fitment accuracy, and on-road performance. Their catalog spans drivetrain components, spacers, hardware, and chassis enhancements, all tailored to elevate both the driving experience and visual appeal of BMW and MINI models.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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MMX Hubcentric Wheel Spacers for BMW F-Chassis Models [MMR37-1512/MMR37-1515/MMR37-1518]

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MMX Hubcentric Wheel Spacers for BMW F-Chassis Models (12mm, 15mm, 18mm)

Why Hubcentric?

Features

Applications

Care and Maintenance

Notes

Frequently Asked Questions

About MMX Performance

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