Volkswagen T-Roc Brake Discs: Specs, Fitment & Wear Symptoms

On the T-Roc, VW's own OEM discs have a documented reputation for corroding faster than quality aftermarket alternatives — plus why rear discs specifically corrode faster than they should.

Illustration for editorial purposes

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OEM Part Number: 5Q0615301H (genuine front disc — confirm via VIN) — aftermarket front discs Brembo 09.9772.11 / Bosch 0 986 479 058

Accuracy note: Covers the Volkswagen T-Roc (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 09.9772.11 (312 x 25 mm, vented, 5 holes, coated, high-carbon, min 22 mm); Bosch 0 986 479 058 (312 x 25 mm, vented, 9 holes, coated, high-carbon, min 22 mm, ECE-R90); ATE 24.0125-0158.1 (312 x 25 mm, vented, 5 holes, coated, high-carbon, min 22.0 mm); Ferodo DDF1305C (312 x 25 mm, vented, 5 holes, coated, Premier Coat+, min 23 mm); ATE 24.0125-0145.1 (288 x 25 mm, vented, 5 holes, coated, high-carbon, min 22.0 mm); Bosch 0 986 479 088 (288 x 24.9 mm, vented, 9 holes, coated, high-carbon, min 22 mm, ECE-R90); TRW DF4295 (288 x 25 mm, vented, 9 holes, painted black, high-carbon); Brembo 09.9145.75 (288 x 25 mm, vented, slotted, 5 holes, coated, min 22 mm)
Disc sizes & variants	Two front sizes are listed, 288 x 25 mm and 312 x 25 mm, both vented on the 112 mm five-stud pattern. The 288 mm disc is the fitment on the smaller 1.0 and 1.5 petrol and lower-output diesel models, while the 312 mm disc is used on the higher-output 2.0 TSI, 2.0 TDI and 4Motion cars.
Genuine (OE) numbers quoted	5Q0615301H (genuine front disc number for this model — confirm via VIN, as several disc sizes exist)
Fitment notes	Minimum thickness is 22 mm for both sizes (22.8 mm for the drilled Brembo 09.9772.1X and 09.9145.1X, 23 mm for the Ferodo). Drilled Brembo Xtra discs are available in both 288 mm (09.9145.1X) and 312 mm (09.9772.1X).

Confirmed: A Genuinely Widespread, Well-Documented VW Corrosion Pattern — Volkswagen T-Roc Brake Discs

Across VAG owner forums, one theme repeats with remarkable consistency: VW's own-brand OEM brake discs have a documented reputation for corroding and pitting considerably faster than quality aftermarket alternatives, particularly on the rear axle. Multiple owners who've switched to reputable aftermarket brands (Pagid and Napa Proformer both specifically mentioned) report the corrosion problem disappearing entirely after fitting, suggesting this is genuinely more about VW's chosen disc material and coating than an inevitable characteristic of the car itself.

A genuine reason rear discs corrode faster, worth understanding: rear brakes generally do less work than the fronts, and cars fitted with adaptive cruise control (which can apply light rear-biased braking automatically) or a hybrid/plug-in hybrid drivetrain (where regenerative braking reduces how often the friction brakes are used at all) make this worse still. A genuinely useful trick some owners use: deliberately braking a little harder than usual for a week or two, including using speed bumps as an opportunity, can clean up light surface corrosion before it becomes a genuine problem.

It's worth knowing dealers frequently treat corrosion-related disc replacement as chargeable "wear and tear" excluded from warranty or maintenance plans, even on cars just a couple of years old with low mileage — but this isn't always the final word. Real cases exist of owners successfully obtaining a refund after VW head office intervened following a formal written complaint, when a local dealer initially refused to honour a maintenance plan covering brake repairs. If you believe corrosion this early genuinely reflects a material issue rather than ordinary wear, escalating in writing to VW customer services is a genuinely worthwhile step before accepting the dealer's first answer.

Volkswagen T-Roc Brake Discs: Watch: Replacing It

🎬 Watch: IDIOTS GUIDE - How to Replace the Front Brake Pads and Discs on a Mk7 VW Golf in under an hour. (sister (Golf Mk7, MQB))

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No T-Roc video found. Generic VAG alternative: 0uJlGHG7OVM.

Volkswagen T-Roc Brake Discs reference plate

Volkswagen T-Roc Brake Discs: The Part That Pads Depend On

On the Volkswagen T-Roc, discs and pads don't wear independently — neglect one and the other degrades faster too, which is exactly why what starts as a routine pad change frequently turns into a disc replacement as well.

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.

Volkswagen T-Roc 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 T-Roc typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.

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Volkswagen T-Roc 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 Volkswagen Brake Discs

The same part, covered across other Volkswagen models.