# Genius KG-100685 Disc Brake Rotor for 2012-2020 BMW 230i, BMW 230i xDrive and More - Rear

### Performance Overview

Genius has been the undisputed leader in coated rotor manufacturing for the last 15 years thanks to it's groundbreaking lab engineered G-Cast™ iron cast and G-Coat™ dipped conative. Genius in-house engineered managed to develop the best combination of iron cast and coating to produce unmatched protection that adhere and stay durable for the lifetime of the rotor, without compromising on the rotor braking performan...

### Key Features

-   Engineered with with Carbon-Enhanced G-Cast™ (G11H18/G3000) iron castings to achieve an optimal braking performance (strength, stability, durability)
-   Exclusive G-Coat™ double-layer (8µm) protective coating provides rust protection on 100% of the non-braking surface
-   100% Precision Spin and Mill-Balanced for smoother stopping and zero vibration at any speed
-   Cross-Hatched smooth surface to improve the pad's ability to grip the rotor surface, especially during initial brake applications or in wet conditions
-   Double disc ground finish eliminates lateral run-out and DTV (disk thickness variation) issues on the rotor and improves pad-rotor bed-in
-   Tested for maximum tolerance to voluminous amount of constant thermal cycles

### Package include:

-   2x Disc Brake Rotor

### Vehicle Fitment

**Fitment Summary:** 2012-2020 BMW 230i, BMW 230i xDrive, BMW M240i, BMW M240i xDrive, BMW 320i, BMW 320i xDrive

**Position:** Rear

-   2017-2020 BMW 230i — Position: Rear | Note: With 345mm Diameter Rear Rotor
-   2017-2020 BMW 230i xDrive — Position: Rear | Note: With 345mm Diameter Rear Rotor
-   2017-2020 BMW M240i — Position: Rear
-   2017-2020 BMW M240i xDrive — Position: Rear
-   2016-2018 BMW 320i — Position: Rear | Note: With 345mm Diameter Rear Rotor
-   2016-2018 BMW 320i xDrive — Position: Rear | Note: With 345mm Diameter Rear Rotor
-   2015-2016 BMW 228i xDrive — Position: Rear | Note: With 345mm Diameter Rear Rotor
-   2015-2016 BMW 428i Gran Coupe — Position: Rear | Note: With 345mm Diameter Rear Rotor
-   2015-2016 BMW M235i xDrive — Position: Rear
-   2014-2016 BMW 228i — Position: Rear | Note: With 345mm Diameter Rear Rotor

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase. This listing includes fitment data for 2012-2020 BMW 230i, BMW 230i xDrive, BMW M240i, BMW M240i xDrive, BMW 320i, BMW 320i xDrive.

**What part number is this?**  
The listed part number is KG-100685.

**Is this product designed for direct replacement?**  
Yes. This Disc Brake Rotor is intended to match compatible vehicle applications listed in the fitment section.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering.

### Common Searches

-   Disc Brake Rotor for BMW 230i
-   KG-100685 fitment
-   Genius Disc Brake Rotor
-   Rear Disc Brake Rotor
-   2012-2020 BMW 230i Disc Brake Rotor

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2017

BMW

230i

Rear

With 345mm Diameter Rear Rotor

2018

BMW

230i

Rear

With 345mm Diameter Rear Rotor

2019

BMW

230i

Rear

With 345mm Diameter Rear Rotor

2020

BMW

230i

Rear

With 345mm Diameter Rear Rotor

2017

BMW

230i xDrive

Rear

With 345mm Diameter Rear Rotor

2018

BMW

230i xDrive

Rear

With 345mm Diameter Rear Rotor

2019

BMW

230i xDrive

Rear

With 345mm Diameter Rear Rotor

2020

BMW

230i xDrive

Rear

With 345mm Diameter Rear Rotor

2017

BMW

M240i

Rear

2018

BMW

M240i

Rear

2019

BMW

M240i

Rear

2020

BMW

M240i

Rear

2017

BMW

M240i xDrive

Rear

2018

BMW

M240i xDrive

Rear

2019

BMW

M240i xDrive

Rear

2020

BMW

M240i xDrive

Rear

2016

BMW

320i

Rear

With 345mm Diameter Rear Rotor

2017

BMW

320i

Rear

With 345mm Diameter Rear Rotor

2018

BMW

320i

Rear

With 345mm Diameter Rear Rotor

2016

BMW

320i xDrive

Rear

With 345mm Diameter Rear Rotor

2017

BMW

320i xDrive

Rear

With 345mm Diameter Rear Rotor

2018

BMW

320i xDrive

Rear

With 345mm Diameter Rear Rotor

2015

BMW

228i xDrive

Rear

With 345mm Diameter Rear Rotor

2016

BMW

228i xDrive

Rear

With 345mm Diameter Rear Rotor

2015

BMW

428i Gran Coupe

Rear

With 345mm Diameter Rear Rotor

2016

BMW

428i Gran Coupe

Rear

With 345mm Diameter Rear Rotor

## Details

- **Price:** 145.07 CAD
- **Vendor:** Genius
- **Type:** Disc Brake Rotor
- **Tags:** 2012-2020 BMW 230i, Automotive Parts, BMW 230i, Brake Parts, Disc Brake Rotor, Genius, KG-100685, Rear, Replacement Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 145.07 CAD | In stock |

## Images

- Genius KG-100685 Disc Brake Rotor for 2012-2020 BMW 230i, BMW 230i xDrive and More - Rear

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/genius-kg-100685-disc-brake-rotor-2012-2020-bmw-230i)
> Updated: 2026-07-16