Peugeot 308 Brake Discs: Specs, Fitment & Wear Symptoms

On the 308, a genuine, dealer-confirmed fault causes brakes to overheat by not releasing fully — plus a real story of how cleaning and hard braking saved a full disc replacement bill.

Illustration for editorial purposes

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OEM Part Number: 9803918180

Genuinely useful technique worth knowing: Peugeot's own ServiceBox VIN lookup tool has been directly confirmed by owners as reliable for this model, returning two different genuine part numbers for two different real cars, both plausible-looking 308s. A dealer or independent specialist can run this for you using your VIN — worth doing rather than guessing from engine size alone.

Confirmed via VIN lookup, 1.6 HDi 120 manual Estate	283mm diameter — Peugeot OEM: 9803918180
Confirmed via VIN lookup, alternative spec	304mm diameter — Peugeot OEM: 4249K1
GT THP (200bhp), front discs	340mm diameter, vented, 30mm thickness, 28mm minimum
GTi (250bhp), front discs	330mm diameter, vented, 30mm thickness, 28mm minimum
Rear discs, most standard variants	249mm diameter, solid, 10mm thickness, 8mm minimum — genuine reference: 16 107 619 80 (also 1610761980)

A Genuine, Confirmed Fault: Brakes That Don't Fully Release — Peugeot 308 Brake Discs

If you're noticing a burning smell, a wheel that feels unusually hot after driving, or a wheel making noise that comes and goes seemingly at random, this is worth checking directly before assuming worn discs or pads: a genuine, dealer-confirmed fault exists where the brakes don't release fully from the disc after being applied, causing exactly this kind of overheating on one or more wheels. This has been documented as an out-of-warranty repair even on cars only around 1.5 years old, with a labour cost commonly in the £60-80 range. If you notice a wheel running hot or smelling of brakes after ordinary driving, it's worth raising this specific fault by name with a technician rather than assuming it's simply wear.

A genuine, real story worth knowing before paying for a full disc replacement: one owner was told at just 20,000 miles that an apparently warped front disc needed both discs and pads replaced, since it wasn't considered a warranted part. Before paying for this, they tried cleaning the pads and reapplying copper grease, then took the car for a drive specifically doing several rounds of hard braking once it was safe to do so — this resolved the vibration completely and saved what would otherwise have been a substantial bill. Rust building up on a disc's clean, unworn area (common on lower-mileage cars, or after the car's been standing in wet weather) can produce a vibration that feels exactly like a warped disc but isn't one.

Peugeot 308 Brake Discs: The Part That Pads Depend On

On the Peugeot 308, discs and pads work as a pair, and neglecting one tends to accelerate wear on the other — which is exactly why worn discs so often get discovered during what was meant to be a routine pad change.

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.

Peugeot 308 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 308 typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.

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Peugeot 308 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 Peugeot Brake Discs

The same part, covered across other Peugeot models.