Hyundai i30 Brake Discs: Specs, Fitment & Wear Symptoms
On the i30, "warping" is genuinely often a widespread Hyundai/Kia design issue where pads get stuck in the caliper bracket.
Illustration for editorial purposes
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OEM Part Number: 51712-S0100
| i30N (2017 onwards), front disc, genuine reference | Hyundai OEM: 51712-S0100 — 345mm diameter, vented, 30mm thickness, 28mm minimum |
|---|---|
| i30N, rear discs | 314mm diameter, vented, 20mm thickness, 18mm minimum |
| Standard trims (2013 onwards), front discs | 280mm or 300mm diameter, vented, depending on engine |
| Standard trims, rear discs | 262mm diameter, solid, 10mm thickness, 8mm minimum |
A Genuinely Detailed, Real Root Cause Worth Knowing About "Warping" — Hyundai i30 Brake Discs
If you've been told your discs have "warped" and are experiencing recurring vibration, this is genuinely worth knowing: this has been documented as a widespread design issue affecting Hyundai and Kia models broadly, where the brake pads themselves can get stuck inside the caliper bracket rather than moving freely. This causes uneven contact between pad and disc, producing vibration typically blamed on a "warped" disc. A documented fix: lightly grinding down the small tabs on the back of the pad and applying appropriate brake grease allows the pad to move more freely.
It's also worth knowing that rear discs commonly corrode more than the fronts on many cars simply because the rear brakes experience less pressure during normal driving.
Hyundai i30 Brake Discs: The Part That Pads Depend On
On the Hyundai i30, 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.
Hyundai i30 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 i30 typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.
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Hyundai i30 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 Hyundai Brake Discs
The same part, covered across other Hyundai models.