BMW X1 Brake Discs: Specs, Fitment & Wear Symptoms
On the X1, what's commonly called "warped discs" is genuinely almost always uneven pad deposits, since cast iron is genuinely hard to warp.
Illustration for editorial purposes
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OEM Part Number: 34116855000 (genuine front disc — confirm via VIN) — aftermarket front discs Brembo 09.C349.11 / Bosch 0 986 479 C93
| Front brake discs (aftermarket) | Brembo 09.C349.11 (294 x 22 mm, vented, 5 holes, coated, high-carbon, min 20.4 mm); ATE 24.0122-0314.1 (294 x 22 mm, vented, 5 holes, coated, high-carbon, min 20.4 mm); Brembo 09.C350.11 (307 x 24 mm, vented, 5 holes, coated, high-carbon, min 22.4 mm); Bosch 0 986 479 C93 (307 x 24 mm, vented, 5 holes, coated, high-carbon, min 22.4 mm); ATE 24.0124-0260.1 (307 x 24 mm, vented, 5 holes, coated, high-carbon, min 22.4 mm); TRW DF6747S (307 x 24 mm, vented, 5 holes, black painted); Brembo 09.C351.11 (330 x 24 mm, vented, 5 holes, coated, high-carbon, min 22.4 mm); Bosch 0 986 479 C94 (330 x 24 mm, vented, 5 holes, coated, high-carbon, min 22.4 mm) |
|---|---|
| Disc sizes & variants | Three front sizes, 294 mm, 307 mm and 330 mm. The 294 x 22 mm disc is the base fitment on the sDrive18i and sDrive18d, the 307 x 24 mm disc is the common fitment on the sDrive20i, xDrive20d and xDrive18d, and the 330 x 24 mm disc goes on the xDrive25d, xDrive25i and M Sport brake cars. |
| Genuine (OE) numbers quoted | 34116855000 (genuine front disc number for this model — confirm via VIN, as several disc sizes exist) |
| Fitment notes | Minimum thickness is 20.4 mm on the 294 mm disc and 22.4 mm on the 307 mm and 330 mm discs. The X1 F48 shares its 307 mm and 330 mm discs with the 1 Series F40, so the same Brembo, Bosch, ATE and TRW references apply. Zimmermann 150.2930.52 is the drilled 330 mm option and febi 108632 (294 mm) and 104104 (307 mm) are the coated budget discs. Ridex 82B1444 and 82B1772 are uncoated and limited to cars built up to November 2016. |
BMW X1 Brake Discs: The Part That Pads Depend On
On the BMW X1, these two components wear together, and letting one go too long accelerates wear on the other, which is why a simple pad swap so often reveals discs that need replacing at the same time.
BMW X1 Brake Discs: Watch: Replacing It
F48 front pads and rotors
BMW X1 Brake Discs: What They Do
Brake discs provide the surface the brake pads clamp against to slow the car, converting momentum into heat through friction. Larger, sportier trims of the X1 typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.
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A Genuinely Important, Honest Clarification Worth Knowing — BMW X1 Brake Discs
If a vibration under braking has been diagnosed as warped discs, this is genuinely worth knowing: what's commonly described as "warped discs" is, in reality, almost always caused by uneven deposits of pad material on the disc surface, since cast iron itself is genuinely difficult to warp under normal driving conditions.
It's also genuinely worth knowing a useful fix worth trying: thoroughly cleaning the mating surfaces between the wheel hub and the disc, or better still fitting new hubs entirely, has been documented resolving this kind of persistent vibration.
BMW X1 Brake Discs: Wear Symptoms, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Brake Discs Guide for warning signs to watch for, confirming fitment against your VIN, and choosing a reliable aftermarket disc.
More BMW Brake Discs
The same part, covered across other BMW models.