Mercedes-Benz C-Class Brake Discs: Specs, Fitment & Wear Symptoms

A genuinely distinctive finding: genuine, original Mercedes discs are designed for aggressive autobahn speeds, meaning UK speed limits genuinely shouldn't cause true warping — plus a technical finding that brake hold systems can create a "hotspot" mistaken for warping.

Illustration for editorial purposes

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OEM Part Number: A0004212212 (genuine front disc — confirm via VIN) — aftermarket front discs Brembo 09.D527.13 / Bosch 0 986 479 H46

Accuracy note: Covers the Mercedes-Benz C-Class (W205 2014-2021) 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)	ATE 24.0128-0330.1 (305 x 28 mm, vented, one-piece, 5 holes, coated, high-carbon, minimum 25.4 mm); Bosch 0 986 479 H46 (305 x 28 mm, vented, two-piece, 5 holes, coated, high-carbon, minimum 25.4 mm); Zimmermann 400.5515.30 (305 x 28 mm, vented, 5 holes, coated, high-carbon, minimum 25.4 mm); ATE 24.0124-0300.1 (295 x 24 mm, vented, 5 holes, coated, high-carbon, minimum 21.4 mm); Brembo 09.D527.13 (318 x 30 mm, vented, two-piece, 5 holes, coated, high-carbon, minimum 27.4 mm); Zimmermann 400.5518.30 (318 x 30 mm, vented, drilled, 5 holes, coated, high-carbon, minimum 27.4 mm); Brembo 09.D528.13 (330 x 32 mm, vented, two-piece, 5 holes, coated, high-carbon, minimum 29.4 mm); ATE 24.0132-0300.2 (342 x 32 mm, vented, drilled, two-piece, 5 holes, coated, high-carbon, minimum 30 mm)
Disc sizes & variants	Seven front sizes: 295 x 24 mm (C160/C180 base brake), 305 x 28 mm (C180, C200, C220d and C250d with the standard brake, the most common), 318 x 30 mm (C250, C300 and AMG Line sports brake), 330 x 32 mm (C400/C43 4Matic), 342 x 32 mm drilled (C43 AMG and the larger sports brake), 360 x 36 mm drilled (C63 AMG) and 390 x 36 mm two-piece aluminium hub (C63 S AMG). The 300 mm, 320 mm and 360 mm discs listed for the rear are rears.
Genuine (OE) numbers quoted	A0004212212 (genuine front disc number for this model — confirm via VIN, as several disc sizes exist)
Fitment notes	The W205 was sold with many brake options, so check the diameter stamped on the old disc; minimum thickness ranges from 21.4 mm (295) to 34 mm (360). Larger discs are two-piece with a steel hub. Five-stud, 112 mm bolt circle.

Mercedes-Benz C-Class Brake Discs: The Part That Pads Depend On

On the Mercedes-Benz C-Class, because discs and pads wear as a pair, neglecting one speeds up wear on the other — which explains why a routine pad change so often turns up discs that are further gone than expected.

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.

Mercedes-Benz C-Class Brake Discs: Watch: Replacing It

🎬 Watch: Mercedes W205 C Class Brake Disks & Pads Replacement

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Alternative: dEN6Gs63FNI (W205/W213 front disc change).

Mercedes-Benz C-Class Brake Discs reference plate

Mercedes-Benz C-Class 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 C-Class typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.

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A Genuinely Distinctive, Honest Finding Worth Knowing — Mercedes-Benz C-Class Brake Discs

If a vibration under braking has been diagnosed as warped discs, this is genuinely worth knowing: genuine, original Mercedes discs are designed specifically to withstand aggressive autobahn speeds and braking from very high velocities, meaning UK speed limits genuinely shouldn't be enough to cause true warping on original discs under normal driving conditions. What's commonly mistaken for warping is far more often corrosion buildup or uneven pad material transfer on the disc surface, particularly on a car that's spent time sitting unused.

A genuinely useful, technical finding worth knowing: automatic gearboxes and brake hold systems, which keep the car stationary against the brakes rather than letting it creep forward, can create a "hotspot" on the disc surface at the exact point where the pad rests during this hold. This changes the friction coefficient at that specific spot, producing a vibration under braking that's frequently mistaken for a warped disc.

It's also genuinely worth knowing a useful, cost-free fix worth trying first: braking firmly from around 60mph five or six times in succession generates enough heat to deglaze the disc and pad contact faces, often curing a vibration caused by corrosion or uneven pad transfer without needing to replace any parts, worth letting the discs cool evenly afterward as part of this process.

Mercedes-Benz C-Class 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 Mercedes-Benz Brake Discs

The same part, covered across other Mercedes-Benz models.