Vauxhall Astra Brake Discs: Specs, Fitment & Wear Symptoms

Why discs and pads usually get replaced together, and what actually fits your specific braking package.

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OEM Part Number: 13586854 (genuine front disc — confirm via VIN) — aftermarket front discs Brembo 09.D391.11 / Bosch 0 986 479 D92

Accuracy note: Covers the Vauxhall Astra (K 2015-2021) 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)	Brembo 09.D391.11 (276 x 26 mm, vented, 5 holes, coated, min 23 mm); Bosch 0 986 479 D92 (276 x 26 mm, vented, 5 holes, coated high-carbon, min 23 mm); TRW DF6819 (276 x 26 mm, vented, 5 holes, painted); Delphi BG5067C (276 x 26 mm, vented, 5 holes, coated); Brembo 09.D392.11 (300 x 26 mm, vented, 5 holes, coated, min 23 mm); ATE 24.0126-0188.1 (300 x 26 mm, vented, 5 holes, coated, min 23 mm); TRW DF6820 (300 x 26 mm, vented, 5 holes, painted).
Disc sizes & variants	Two front sizes, both 26 mm thick on a 5 x 105 mm pattern with 60 mm centre bore: 276 mm for the 1.0 Turbo, 1.4 non-turbo and 1.6 CDTi 110, and 300 mm for the 1.4 Turbo, 1.6 Turbo and the 1.6 CDTi 136 and BiTurbo.
Genuine (OE) numbers quoted	13586854 (genuine front disc number for this model — confirm via VIN, as several disc sizes exist)
Fitment notes	Minimum thickness 23 mm on both sizes. The 264 x 10 mm and 288 x 12 mm solid discs are rears.

Vauxhall Astra Brake Discs: The Part That Pads Depend On

On the Vauxhall Astra, 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.

Vauxhall Astra Brake Discs: Watch: Replacing It

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Vauxhall Astra Brake Discs reference plate

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.

Vauxhall Astra 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 Astra typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.

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Vauxhall Astra 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 Vauxhall Brake Discs

The same part, covered across other Vauxhall models.