Toyota GT86 Brake Discs: Specs, Fitment & Wear Symptoms
On the GT86, a genuinely useful myth worth correcting: discs don't actually "warp" — the real cause is pad material depositing unevenly.
Illustration for editorial purposes
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OEM Part Number: SU00300638 (genuine front disc — confirm via VIN) — aftermarket front discs Brembo 09.A921.11 / ATE 24.0124-0145.1
| Front brake discs (aftermarket) | Brembo 09.A921.11 (293 x 24 mm, vented, 5 holes, coated, min 22 mm); Brembo 09.A921.1X (293 x 24 mm, vented, drilled, 5 holes, coated, high-carbon, min 22.5 mm); Zimmermann 530.2458.52 (293 x 24 mm, vented, drilled, 5 holes, coated, min 22 mm); febi 108400 (294 x 24 mm, vented, 5 holes, coated, min 22 mm); Brembo 09.5674.21 (276 x 24 mm, vented, 5 holes, coated, min 22 mm); ATE 24.0124-0145.1 (277 x 24 mm, vented, 5 holes, coated, min 22 mm); Brembo 09.7812.2X (326 x 30 mm, vented, drilled, 5 holes, coated, high-carbon, min 28.5 mm). |
|---|---|
| Disc sizes & variants | three front sizes, 276-277 x 24 mm, 293-294 x 24 mm and 326 x 30 mm. The 293-294 mm disc is the standard UK GT86 front disc; the 276-277 mm disc is the smaller fitment used on base-specification cars in other markets, and the 326 x 30 mm disc is for cars with the Brembo performance brake package. |
| Genuine (OE) numbers quoted | SU00300638 (genuine front disc number for this model — confirm via VIN, as several disc sizes exist) |
| Fitment notes | Minimum thickness 22 mm on the 24 mm discs (22.5 mm on the Brembo drilled disc) and 28.5 mm on the 326 mm disc. The 293 mm references are shared with the Subaru XV and Forester. TRW DF1437, Delphi BG3413, Bosch 0 986 479 A83, Brembo 09.7812.21 and Brembo 09.C662.11 are also listed but without a stated fitting position. |
A Genuinely Useful Myth Worth Correcting: Discs Don't Actually "Warp" — Toyota GT86 Brake Discs
If you're feeling a pulsing sensation through the brake pedal and have been told the discs have "warped," this is genuinely worth understanding: discs don't actually physically warp or bend. What's really happening is that pad material transfers unevenly onto the disc surface, creating slightly higher and lower points around the circumference — this is what you feel as pulsing. A common cause worth knowing: holding the brake pedal down while stationary immediately after hard braking, rather than releasing it once stopped, keeps heat concentrated in one spot and encourages exactly this kind of uneven deposit.
It's also worth knowing that a car left standing overnight with heavily corroded discs can occasionally feel genuinely stuck when trying to pull away — a firm, deliberate application of the accelerator followed by a couple of firm brake applications once moving typically clears this within a few hundred metres.
Toyota GT86 Brake Discs: The Part That Pads Depend On
On the Toyota GT86, 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.
Toyota GT86 Brake Discs: Watch: Replacing It
Same car as the Subaru BRZ and Scion FR-S, front pads and rotors.
Toyota GT86 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 GT86 typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.
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Toyota GT86 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 Toyota Brake Discs
The same part, covered across other Toyota models.