BMW Brake Rotors & Discs for BMW G42 230i B46 2.0L

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Similarly to brake pads, the brake rotors can be matched to specific driving conditions and intended use. For solely street use the design and characteristics particular to each rotor are not big factors in overall braking performance. For instance, a cross-drilled rotor will not significantly improve braking under street conditions. Improved stopping performance will come mostly from your brake pads. Some rotor designs perform better under racing conditions with racing pads but, generally, all rotor types can be used on the street. For race track use we typically recommend a slotted or blank stock rotor. Any 2-piece floating rotor is superior to anything else and those are our first recommendation when available. For more information on the brake rotors we sell, check out our rotor buying guide.

All of these rotors are manufactured to meet BMW's specs for each vehicle application. Our standard rotors are sourced from original manufacturers for BMW (OEM), performance alternatives, or straight from BMW themselves. In some cases BMW Motorsport and BMW Performance will have their own rotor upgrades. Our Cross-Drilled, Slotted, and Drilled+Slotted rotors are manufacturered by StopTech - a global leader in braking technology and the braking technical partner to the Turner Motorsport racing team.

Click on the rotor types below to see those rotors for your car.

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Zimmermann Z-Coat Front Brake Rotor (330x24) - 34106880072
Zimmermann Z-Coat Front Brake Rotor (330x24) - 34106880072
For vehicles without M-Sport Brakes (S2NHA) & without Motorsport Engineering Package (Z...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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Zimmermann - Corporate Logo
T#:29998259
Part#: 34106880072
In Stock at Vendor
$ 207.99

This product was last offered at the strikethrough price on
04-10-2026

$ 179.99 USD
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$ 179.99 USD
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Genuine BMW Front Brake Rotors - Pair (348x36mm) - BMW G20 330/M340, G42 230/M240
Genuine BMW Front Brake Rotors - Pair (348x36mm) - BMW G20 330/M340, ...
For vehicles with BMW's M Sport Braking System
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:7734728
Part#: 34106880075KT
Ships in 3 Business Days
$ 567.99 USD
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$ 567.99 USD
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Restore your braking performance and smoothness with a new pair of Genuine BMW rotors. Grinding, pulsating and a lack of stopping power are signs that your rotors are going bad. When this occurs, be sure to replace them to ensure that you stop perfectly every time. When replacing your rotors, be sure to check the pads and the calipers so signs of wear, as this may affect your ability to stop. Keep your braking system in top-notch condition by checking and replacing components whenever wear is visible or suspected.
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High Carbon Coated Rotor 348x34.40
High Carbon Coated Rotor 348x34.40
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATE - Corporate Logo
T#:36540601
Part#: 436133
In Stock at Vendor
$ 432.99

This product was last offered at the strikethrough price on
05-08-2026

$ 419.99 USD
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$ 419.99 USD
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BRAKE DISC, LIGHTWEIGHT,VENT
BRAKE DISC, LIGHTWEIGHT,VENT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:49508947
Part#: 34208887194
Ships in 3 Business Days
New Item
15% off MSRP $ 223.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 190.99 USD
Free Shipping on orders $49 and up
Add to Wish List
15% off MSRP
$ 223.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 190.99 USD
Free Shipping on orders $49 and up
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Take control of your stopping power with this Genuine BMW lightweight ventilated front brake disc. Built to exact factory specifications, it provides consistent, fade-resistant braking, giving your BMW sharp, predictable response whether you’re commuting, tackling twisty roads, or hauling heavy loads. Crafted from premium, lightweight materials, the ventilated design efficiently dissipates heat, reducing fade and keeping pad temperatures lower than standard solid discs. Air-through channels maintain optimal cooling for reliable, precise braking under all conditions. This OEM replacement rotor installs directly with perfect fitment—no modifications required. Worn, warped, or corroded discs? This factory-correct part restores confidence, extends pad life, and keeps your braking system performing exactly like it left the factory.
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Rear Left Brake Disc - G20/G42/G06
Rear Left Brake Disc - G20/G42/G06
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:50346421
Part#: 34208887193
Ships in 3 Business Days
New Item
15% off MSRP $ 223.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 190.99 USD
Free Shipping on orders $49 and up
Add to Wish List
15% off MSRP
$ 223.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 190.99 USD
Free Shipping on orders $49 and up
Add to Wish List
300x20 34208887193 Bring back the original pedal feel and stopping power with Genuine BMW rotors.

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