A1-012 GiroDisc BMW E46 M3 Front Rotors
Upgrade your BMW E46 M3’s braking system with the GiroDisc A1-012 front rotors—engineered to deliver reduced unsprung weight, improved thermal performance, and track-ready reliability. These 2-piece rotors are a direct replacement for the factory front rotors and bolt up with no modifications required.
Lightweight 2-Piece Design for Maximum Stopping Power
FITMENT: BMW E46 M3 (all years), Front
The GiroDisc A1-012 rotors are crafted for drivers who demand performance and longevity. Each rotor features a high-carbon alloy cast iron ring and a lightweight 6061-T6 aluminum hat. This reduces rotational mass, improves heat dissipation, and helps your braking system perform better on both street and track.
These rotors are fully compatible with OEM calipers and pads, and they install using your factory hardware. When the rings wear down, you can replace them with the D1-012 rings without having to purchase new hats—keeping future maintenance cost-effective and simple.
Each rotor includes GiroDisc’s floating hardware system, which allows for proper thermal expansion and helps eliminate vibration or warping during heavy use. The result is a rotor that stays quiet on the street and reliable under race-day conditions.
Sold and priced per pair.
A1-012 Front Rotor Features:
Direct replacement for OEM front rotors—no modifications needed
2-piece design with high-carbon alloy rings and aluminum hats
Reduces unsprung weight and improves brake responsiveness
Floating mount system ensures optimal heat management
Rebuildable with D1-012 replacement rings
Made in the USA from high-quality domestic materials
A1-012 Front Rotor FAQs:
Will these fit with stock calipers and pads? Yes, they are fully compatible with OEM calipers and pad shapes—just bolt them on and go.
Are these suitable for both street and track use? Absolutely. They’re quiet and street-friendly, but strong enough to handle heavy braking loads at the track.
Do I need to buy special pads or hardware? No, your factory pads and hardware will work perfectly with these rotors.
How do I replace the rings? When the rotor rings reach their wear limit, simply install D1-012 replacement rings and reuse the original hats and hardware.
For drivers who push their E46 M3 to the limit, the GiroDisc A1-012 front rotors deliver race-proven performance with everyday drivability and long-term value.
