2026 SEALION 5 brake discs: distinguish ventilated front discs from solid rear discs

If the rear disc removed from a vehicle lacks the front disc's internal ventilation structure, do not immediately assume the wrong part was installed. The Australian 2026 SEALION 5 factory table specifies ventilated front discs and solid rear discs. State the axle and construction rather than simply requesting “a set of brake discs”.

Ventilated describes the disc body construction

The factory chassis section separately states Front brake disc: Ventilated and Rear brake disc: Solid.[T11] This does not describe whether the disc face is drilled or grooved. A face photograph alone cannot combine body construction and surface design into a single selection condition.

Separate inspection records by front and rear axle, retaining disc markings, damage locations and the repairer's measurements. For noise or vibration, also record the conditions. The equipment table does not associate these symptoms with mandatory front or rear disc replacement.

Construction is not a wear limit

Ventilated front and solid rear construction helps identify the requirement, but provides no disc diameter, new thickness or minimum service thickness. Replacement still requires vehicle-specific service information and actual measurements. A thinner-looking rear disc does not alone establish wear, and a thicker-looking ventilated disc is not automatically an upgrade substitute. [To be verified]

Scope and verification

This article covers only Australia; MY26; BYD SEALION 5; Essential DM-i and Premium DM-i. [Model-year and trim reference][T11] Factory equipment identifies functions and parts only; it is not a fault or replacement criterion.

No public data was available in the reviewed material for OE numbers, repair parameters, separate parts availability or compatibility and interchangeability. [To be verified] Verify compatibility or interchangeability using the vehicle identification number (VIN) and local Australian manufacturer parts catalogue.

For the parts discussed here, use the parts enquiry page.

[T11]: https://bydautomotive.com.au/brochures/BYD-SEALION-5-2025.pdf