Mercedes-Benz CLA Brake Discs: Specs, Fitment & Wear Symptoms
On the CLA, genuine, original Mercedes discs are designed for aggressive autobahn speeds, meaning UK speed limits genuinely shouldn't cause true warping.
Illustration for editorial purposes
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OEM Part Number: confirm via VIN — front discs (aftermarket) Brembo 09.B343.41 / Bosch 0 986 479 A00
| Front brake discs (aftermarket) | Bosch 0 986 479 A00 (280 x 25 mm, vented, 5 holes, coated, high-carbon, minimum 22.4 mm); Brembo 09.B343.41 (280 x 25 mm, vented, 5 holes, coated, high-carbon, minimum 22.4 mm); Bosch 0 986 479 A01 (295 x 28 mm, vented, 5 holes, coated, high-carbon, minimum 25.4 mm); Brembo 09.B344.41 (295 x 28 mm, vented, 5 holes, coated, high-carbon, minimum 25.4 mm); ATE 24.0128-0276.1 (295 x 28 mm, vented, 5 holes, coated, high-carbon, minimum 25.4 mm); ATE 24.0128-0262.1 (295 x 28 mm, vented, drilled, 5 holes, coated, high-carbon, minimum 26 mm); Brembo 09.B807.51 (320 x 30 mm, vented, drilled, 5 holes, coated, high-carbon, minimum 28 mm); Brembo 09.B913.11 (350 x 32 mm, vented, slotted and drilled, 5 holes, coated, high-carbon, minimum 30 mm). |
|---|---|
| Disc sizes & variants | Same four-size spread as the W176 A-Class: 280 x 25 mm on the CLA180 and 180 CDI base brake, 295 x 28 mm (plain or drilled) on CLA200, 220 CDI and 250, 320 x 30 mm drilled on the CLA250 Sport and AMG Line sports brake, and 350 x 32 mm drilled on the CLA45 AMG. The 276 mm, 295 mm and 330 mm rear sizes are rears. |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine discs against your VIN |
| Fitment notes | Check the fitted diameter before ordering because the 280 mm and 295 mm fronts overlap by model; minimum thickness is 22.4 mm (280), 25.4 mm (295 plain), 26 mm (295 drilled), 28 mm (320) and 30 mm (350). Five-stud, 112 mm bolt circle, 67 mm centre bore. |
Mercedes-Benz CLA Brake Discs: The Part That Pads Depend On
On the Mercedes-Benz CLA, 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.
Mercedes-Benz CLA Brake Discs: Watch: Replacing It
Alt rBqeuQDgdrk (front and rear pads and rotors CLA).
Mercedes-Benz CLA 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 CLA 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 CLA 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, meaning UK speed limits genuinely shouldn't be enough to cause true warping under normal driving conditions. What's commonly mistaken for warping is far more often corrosion buildup or uneven pad material transfer.
It's also genuinely worth knowing a useful, cost-free fix: braking firmly from around 60mph five or six times can deglaze the disc and pad contact faces, often curing a vibration without needing to replace any parts.
Mercedes-Benz CLA 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.