Ford B-Max Brake Discs: Specs, Fitment & Wear Symptoms

A vibrating steering wheel after a brake job almost certainly isn't genuine disc warping — here's the real, more common cause.

Illustration for editorial purposes

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OEM Part Number: 1751584 (as quoted in catalogue listings — confirm via VIN) — aftermarket front discs Brembo 09.C422.11 / Bosch 0 986 479 659

Accuracy note: Covers the Ford B-Max (2012-2017) as listed in the UK aftermarket catalogues. Front brake discs are sold by diameter and thickness, and most models have two or three disc sizes depending on engine, brake size and trim — a 278 mm disc will not fit a car built with 300 mm brakes, so the caliper carrier and the disc must match. The references below are UK aftermarket catalogue listings for this generation, labelled by brand with diameter x thickness in mm; genuine numbers are shown only where a listing quotes one. Measure the old disc or check the brake size against your VIN before ordering, replace discs in pairs with new pads, and scrap any disc at or below its minimum thickness.

Front brake discs (aftermarket)	Brembo 09.C422.11 (278 x 23 mm, vented, 4 holes, coated, Prime line); Bosch 0 986 479 659 (278 x 23 mm, vented, 4 holes, coated, high-carbon, ECE-R90); TRW DF6509 (278 x 23 mm, vented, 4 holes, painted); ATE 24.0123-0122.1 (278 x 23 mm, vented, 4 holes, coated); Ferodo DDF2461C (278 x 23 mm, vented, coated); Zimmermann 250.1362.20 (278 x 23 mm, vented, 4 holes, coated, Coat Z); Zimmermann 250.1362.52 (278 x 23 mm, vented, drilled, 4 holes, coated, Sport)
Disc sizes & variants	A single front size is listed, 278 x 23 mm, vented, four holes on a 108 mm bolt circle with a 63.5 mm centring bore, fitted across the 1.0 EcoBoost, 1.4, 1.6 petrol and 1.5 and 1.6 TDCi range.
Genuine (OE) numbers quoted	Ford 1751584 is listed as the genuine disc, with no brand cross-reference quoted
Fitment notes	Minimum thickness is 21 mm (21.5 mm for the drilled Brembo Xtra 09.C422.1X). Slotted Brembo 09.C422.75 and drilled Zimmermann Sport options are available in the same size.

Ford B-Max Brake Discs: The Part That Pads Depend On

On the Ford B-Max, it's a paired system: let either one wear too far and the other suffers for it, which is why so many "just a pad change" jobs end up including discs once a mechanic actually looks.

Before you buy: disc size and design vary by trim, engine size and whether your car has the standard or "sport" brake package. Always confirm against your VIN before ordering.

Ford B-Max Brake Discs: Watch: Replacing It

🎬 Watch: 2015 Ford B-Max Part 1 - Service and front brake disc & pad replacement

Watch on YouTube ↗

B-Max front discs and pads (alt https://www.youtube.com/watch?v=3nrqEh8ZnsA)

Before Assuming Your Discs Have Warped, Read This

A vibrating steering wheel under braking gets blamed on warped discs more often than any other cause — but in the large majority of cases, the discs haven't actually bent from heat at all. What's really happening is Disc Thickness Variation (DTV), uneven pad material deposits building up across the disc surface, often during the bedding-in period after a fresh fit, producing the same pulsing sensation as genuine warping. Bedding in new discs and pads gradually, avoiding hard braking in the first few hundred miles, measurably reduces the risk of this developing in the first place.

Ford B-Max 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 B-Max typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.

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Ford B-Max 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 Ford Brake Discs

The same part, covered across other Ford models.