Rear Brake Disc BYD S6

The BYD S6 is a city-oriented multi-purpose SUV launched by BYD in 2010; its dimensions are 4810 × 1855 × 1725 mm, with a wheelbase of 2720 mm and a curb weight of approximately 1620 kg. The front and rear tires all feature the same specification: 225/65 R17, and it is equipped with a full-size spare tire.

The S6's braking system features a front ventilated disc and rear solid disc configuration, equipped with the Bosch ABS and EBD systems. As an SUV weighing over 1.6 tons, although the rear wheels do not provide the primary braking force, their brake discs must meet stringent requirements for rigidity, resistance to thermal fade, and corrosion resistance due to the vehicle's substantial curb weight.

To meet the specific compatibility requirements for the rear wheels of the BYD S6, we have introduced this BYD S6 rear brake disc (often referred to by overseas customers as "rear brake disc", "rear brake rotor", or "brake rotor"), with an exclusive OEM part number of OE-S61011057; it is manufactured using a 1:1 mold based strictly on the dimensions specified in the S6 original factory service manual:

The brake disc features laser-engraved "MIN THK" permanent markings, complying with the mandatory requirements of Clause 5.9 of GB/T 34422-2017 "Brake Discs for Automobiles," which stipulates that "the minimum usable thickness shall be indicated at a prominent location on the brake disc, and the marking shall be clear and permanent."

The brake disc accuracy specifications shall strictly comply with the GB/T 34422-2017 and T/CAAMTB-9-2018 standards for passenger vehicle brake discs: the runout value of the rear brake disc friction surface ≤ 0.03 mm; the parallelism between the friction surface and the wheel hub mounting surface ≤ 0.05 mm; and the flatness of the wheel hub mounting surface ≤ 0.03 mm.

The product can be installed immediately upon receipt; no further machining on a lathe is required, and it can be directly matched with the S6's ABS + EBD braking system.

The rear brake disc for the BYD S6 (OE: S61011057) features a three-layer progressive composite anti-corrosion coating process for its non-friction area, overcoming the limitations of traditional single-layer paint protection. This process provides layered protection starting from the cast iron substrate: the base coat consists of a zinc-based phosphating sealing primer with a dry film thickness of 8–12 μm; this layer utilizes a low-temperature water-based eco-friendly formulation and is cured under constant temperature at 90°C, replacing the traditional high-temperature painting process at 130°C to prevent deformation of the cast iron substrate caused by high temperatures. The function of this coating is to completely seal the internal micro-porosity and air pockets within the cast iron, thereby eliminating the source of substrate corrosion; it enhances the adhesion of subsequent coatings, forms a stable cathodic protection base layer, prevents coating peeling or detachment, and lays a solid foundation for the entire anti-corrosion system.

Core Anti-Rust Layer: Zinc-Aluminum Composite Intermediate Protective Layer. The dry film thickness ranges from 10–15 μm; this layer utilizes a chromium-free, eco-friendly zinc-aluminum laminate structure, where multiple layers of thin zinc-aluminum sheets are interlaced to form a dense physical barrier. Leveraging the chromium-free Dacron protective system, this coating possesses self-healing protection capabilities: even if minor scratches occur on the coating surface, it can automatically form a passivation film. Results from third-party neutral salt spray tests demonstrate that the coating remains free of red rust and does not bubble for up to 240 hours; its performance significantly exceeds the industry baseline standard of 144 hours for single-layer coatings, making it suitable for harsh overseas operating environments, such as coastal areas, rainy regions, and roads with saline-alkali conditions. Surface Protective Layer: Water-based acrylic UV-curable topcoat. After the accumulation of the preceding two layers, the total dry film thickness of this surface coat is controlled between 20 and 30 μm; it employs a low-temperature UV curing process, resulting in exceptionally low VOC emissions. Throughout the manufacturing process, it fully complies with the EU RoHS and REACH environmental directives, enabling compliant export to markets across Europe, North America, Southeast Asia, and the Middle East.

The surface coating further enhances water vapor resistance and acid-alkali resistance; after the complete three-layer coating system is applied, the product can withstand a neutral salt spray test for up to 280 hours without rusting or peeling. Even when subjected to long-term maritime transportation or outdoor storage, it remains highly resistant to rusting, thereby reducing the manual labor costs associated with rust removal upon delivery by the maintenance facility.

All dimensions and performance data are strictly calibrated and manufactured in accordance with industry standards.

This rear brake disc is applicable to multiple vehicle models with stable compatibility and accurate fitting size. The detailed applicable models are listed below:

BYD M6 2010/07-
BYD S6 2011/05-

This product corresponds to a variety of mainstream brand part numbers and OE codes, which can perfectly replace the original parts. The detailed cross-reference information is as follows:

To address the challenges of long-distance ocean shipping and multi-stage transshipment involving BYD S6 rear brake discs, we implemented a multi-layered protective packaging solution that provides comprehensive reinforcement-from individual item protection to full container support-effectively preventing condensation-induced rusting and surface scratches.

Each BYD S6 rear brake disc features a moisture-resistant inner protective layer individually wrapped in rust-proof paper, complemented by an outer sealed PE moisture-proof bag that provides dual protection against high-salt mist and moisture within the container, effectively preventing rust formation during long-distance transportation. Additionally, specialized protective films are applied to all friction contact surfaces to safeguard the coating and ensure surface integrity from scratches or damage during processing.

The single-box buffer packaging design standard specifies that each export carton shall securely hold two BYD S6 rear brake discs (comprising complete sets for both left and right rear wheels of a single vehicle). A thickened EPE pearl cotton partition is installed between the discs to prevent mutual impact or wear during transportation.

The high-strength export outer packaging employs a five-layer double-walled, thickened paperboard specifically designed for export applications, featuring adequate load-bearing capacity and compression resistance suitable for multi-layer stacking in containers. Upon completion of packing, the entire container is fully wrapped with stretch film to prevent rainwater and moisture ingress while avoiding cracking or unpacking during transportation.

For bulk wholesale orders of full containers packed in EU-standard pallets, all shipments utilize centrally coded EU-standard fumigated export pallets. Upon stacking, the entire container is fully covered with multi-layer wrapping film and secured with high-strength packaging tape using cross-lock fasteners to prevent cargo displacement or spillage during maritime transport and port handling, thereby reducing damage rates upon delivery. The warranty period commences from the issuance date of the Bill of Lading (B/L), covering either 12 months or 80,000 kilometers, whichever condition is met first.

Q1: For this rear brake disc with OE number S61011057, which model years and engine displacements of the BYD S6 is it compatible with?
A: This brake rotor is a 1:1 replica of the original factory specifications and fully fits all BYD S6 models from 2010 to 2016, covering the two mainstream gasoline engine options: 1.8L, 2.0L, and 2.4L. It is designed for direct, non-destructive installation on S6 vehicles equipped with solid rear discs and Bosch ABS+EBD braking systems-no spacers or secondary machining required.

Q2: What's the difference between solid rear brake discs and ventilated discs, and why does the BYD S6 only use solid ones at the rear?
A: The BYD S6's braking force is biased toward the front wheels, so the rear wheels bear less load. Factory-fitted solid brake discs are sufficient to meet braking demands. OE-S61011057 is an OEM-equivalent solid disc-more rigid, less prone to warping, and more cost-effective for bulk orders. It fully aligns with the original braking calibration logic and does not interfere with ABS sensor signals.

Ongoing Advancement of National Standards for Aftermarket Brake Discs
The mandatory national standard Technical Requirements and Test Methods for Automotive and Trailer Brake Components, proposed by the Ministry of Industry and Information Technology (MIIT), applies to aftermarket brake discs used in automotive and trailer braking systems. Its key technical provisions are based on a non-equivalent adoption of UNECE Regulation No. 90 (ECE R90). This means that aftermarket brake discs must achieve performance levels between 90% and 150% of original equipment (OE) parts, while also passing critical validation tests covering high-temperature fade, wear rate, and compressibility characteristics.

New Benchmark for Passenger Vehicle Brake Disc Precision
The industry standard T/CAAMTB-9-2018 Product Standard and Test Methods for Passenger Vehicle Brake Discs establishes clear, quantified precision requirements:

• Rear brake disc friction surface runout ≤ 0.03 mm
• Friction surface circumferential DTV ≤ 0.008 mm
• Friction surface radial DTV ≤ 0.05 mm
• Wheel hub mounting surface flatness ≤ 0.03 mm
• Parallelism between friction surface and wheel hub mounting surface ≤ 0.05 mm
• Single-side thickness variation of ventilated disc friction surfaces ≤ 1.2 mm
• All precision metrics for OE part S61011057 are strictly controlled in accordance with this standard.

Hot Tags: rear brake disc byd s6, China rear brake disc byd s6 manufacturers, suppliers, factory, complete EPB rear brake assembly BYD S7 seven seat SUV, complete EPB rear brake assembly BYD Tang seven seat SUV, Export rear brake disc for BYD Tang to Europe, Front Brake Discs for BYD F6