Do these BMW F30 brake rotors require M Sport calipers?

Yes. The MMX BMW F30 brake rotors rear set is sized at 345x24mm to match the factory M Sport (blue caliper) rear brake setup. Standard brake calipers on F2x/F3x cars use a different rotor size and are not compatible with this set.

What is the benefit of the 2-piece design on these BMW F30 brake rotors?

The 2-piece construction separates the high-carbon iron friction ring from the aluminum centre hat via a pin-drive system. This allows the ring to expand under heat without distorting the hat, reduces unsprung mass compared to the single-piece OE rotor, and maintains structural integrity under sustained thermal load from fast road and track use.

Why are these BMW F30 brake rotors grooved rather than drilled?

Directional grooves evacuate gas and pad material effectively under hard braking without introducing the fatigue cracking risk that cross-drilling can cause on iron rotors. The MMX groove pattern also generates less noise than straight-slot alternatives while improving bite and heat dissipation.

Are these BMW F30 brake rotors street legal?

Yes. The BMW F30 brake rotors rear set carries R90 certification, confirming they meet the regulatory standard for public highway use across Europe.

Should I upgrade the front BMW F30 brake rotors at the same time?

For balanced braking performance and matched thermal behavior front to rear, pairing these rear BMW F30 brake rotors with the matching 370x30mm front rotor set — linked in the Notes section — delivers the complete upgrade. The rear set works standalone but the full pairing gives better overall brake balance.

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Description

MMX 2-Piece Rear Brake Rotors 345x24mm for F2x / F3x BMW 1, 2, 3, and 4 Series M Sport

BMW F30 brake rotors rear set from MMX Performance is a direct-fit 2-piece upgrade for F2x and F3x BMW models equipped with M Sport brakes (blue calipers), covering the F20/F21 1 Series, F22/F23 2 Series, F30/F31/F34/F35 3 Series, and F32/F33/F36 4 Series. Precision-engineered to replace the factory 345x24mm rear discs, the MMX BMW F30 brake rotors rear set delivers improved initial bite, efficient debris evacuation under hard braking, and reduced vibration under high thermal load, with full R90 certification for public road use. The 2-piece construction pairs a lightweight aluminum center hat with a high-carbon cast iron rotor ring secured via a pin-drive system, enhancing cooling efficiency and reducing unsprung mass compared to the single-piece OE disc. MMX’s signature directional groove pattern improves braking bite and heat dissipation without the fatigue-cracking risk of drilled alternatives, and generates less noise than straight-slot designs. A black zinc anti-corrosion coating on the centre bell and outer lip provides long-term corrosion protection and a refined visual finish. Sold as a pair of rear rotors; matching 370x30mm front rotors available separately for a complete upgrade.

Features

2-piece construction high-carbon cast iron ring with lightweight aluminum center hat
Pin-drive system connecting ring and hat for minimal unsprung mass
MMX directional groove design for enhanced bite and efficient debris evacuation
Quieter and less prone to fatigue cracking than drilled or straight-slot designs
Black zinc anti-corrosion coating on centre bell and outer lip
R90 certified public highway legal
Direct replacement for OE 345x24mm rear discs
Suitable for fast road and track day use

Applications

BMW 116i: F20, F21 | 2012-2019
BMW 118i: F20, F21 | 2012-2019
BMW 125i: F20, F21 | 2012-2019
BMW 228i: F22, F23 | 2014-2016
BMW 230i: F22, F23 | 2016-2021
BMW 328i: F30, F31, F34, F35 | 2012-2015
BMW 340i: F30, F31, F34, F35 | 2015-2019
BMW 428i: F32, F33, F36 | 2013-2016
BMW 430i: F32, F33, F36 | 2016-2020
BMW 435i: F32, F33, F36 | 2013-2016
BMW 440i: F32, F33, F36 | 2016-2020
BMW M135i: F20, F21 | 2012-2016
BMW M140i: F20, F21 | 2016-2019
BMW M235i: F22, F23 | 2014-2016
BMW M240i: F22, F23 | 2016-2021

Notes

Compatible with M Sport brake calipers (blue) only. Not compatible with standard brake calipers.
Sold as a pair (2 rear brake rotors)
Matching 370x30mm front rotors available separately for a complete upgrade
Images are generic; actual product may vary

Frequently Asked Questions

Do these BMW F30 brake rotors require M Sport calipers? Yes. The MMX BMW F30 brake rotors rear set is sized at 345x24mm to match the factory M Sport (blue caliper) rear brake setup. Standard brake calipers on F2x/F3x cars use a different rotor size and are not compatible with this set.
What is the benefit of the 2-piece design on these BMW F30 brake rotors? The 2-piece construction separates the high-carbon iron friction ring from the aluminum centre hat via a pin-drive system. This allows the ring to expand under heat without distorting the hat, reduces unsprung mass compared to the single-piece OE rotor, and maintains structural integrity under sustained thermal load from fast road and track use.
Why are these BMW F30 brake rotors grooved rather than drilled? Directional grooves evacuate gas and pad material effectively under hard braking without introducing the fatigue cracking risk that cross-drilling can cause on iron rotors. The MMX groove pattern also generates less noise than straight-slot alternatives while improving bite and heat dissipation.
Are these BMW F30 brake rotors street legal? Yes. The BMW F30 brake rotors rear set carries R90 certification, confirming they meet the regulatory standard for public highway use across Europe.
Should I upgrade the front BMW F30 brake rotors at the same time? For balanced braking performance and matched thermal behavior front to rear, pairing these rear BMW F30 brake rotors with the matching 370x30mm front rotor set linked in the Notes section delivers the complete upgrade. The rear set works standalone but the full pairing gives better overall brake balance.

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, often putting 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 2-Piece Rear Brake Rotors (345mm x 24mm) for BMW F2x / F3x BMW 1 Series, 2 Series, 3 Series, and 4 Series M Sport [MMR30-0501R]

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MMX 2-Piece Rear Brake Rotors 345x24mm for F2x / F3x BMW 1, 2, 3, and 4 Series M Sport

Features

Applications

Notes

Frequently Asked Questions

About MMX Performance

Reviews