According to reports from Chinese media, Xiaomi is set to launch the Ultra version of the SU7 at its product launch event on October 29. Prior to this, CEO Lei Jun announced that the car will feature the largest ceramic brakes ever seen on a sports car. In a Weibo post, he stated, “The Xiaomi SU7 Ultra is equipped with competition-grade carbon ceramic brake discs, and the diameter of these brake discs is currently the largest among sports cars!”
The front brake disc measures 430 mm x 40 mm, while the rear disc is slightly smaller at 410 mm x 32 mm. These ceramic brakes are said to withstand maximum temperatures exceeding 1,300 °C (2,372 °F). Traditionally used in high-performance sports and racing cars, ceramic brakes excel in braking performance due to their lightweight design, exceptional durability, and high-temperature resistance. Carbon-ceramic materials can endure extremely high temperatures above 1,000 °C without suffering thermal degradation, even under the demanding conditions of track racing.
Weighing less than half of traditional cast iron brake discs, these ceramic brakes contribute to reduced vehicle weight, which enhances handling. Additionally, they experience less wear and can last 3 to 5 times longer than steel brake discs, making them ideal for sustained high-performance use. However, their advanced materials and complex manufacturing processes result in significantly higher costs.
Past incidents involving the Xiaomi SU7 have shown it veering off the track due to degraded brake performance, but the Ultra version aims to eliminate such issues by optimizing performance.
Pricing for the Xiaomi SU7 Ultra is expected to start at over 800,000 yuan (approximately $112,250), with Goldman Sachs projecting sales of 4,000 units by 2025.
Unlike the prototype, the Xiaomi SU7 Ultra will be road-legal. It is believed to have the same powertrain as the prototype, which consists of three Xiaomi super motors: two V8s and one V6. Together, these motors create a three-motor, four-wheel drive system with a total output of up to 1,138 kW (1,548 PS).
This impressive powertrain is expected to achieve a 0-100 km/h acceleration time of just 1.97 seconds, with a top speed exceeding 350 km/h.
The Xiaomi SU7 Ultra features a 150 kWh battery pack, utilizing CATL’s Qilin 2.0 battery technology. Xiaomi employs a cell-to-body (CTB) structure to integrate the battery into the car, which increases rigidity and reduces weight. The maximum output of this system is 1,330 kW, and it includes a dual-surface cooling system that enhances cooling efficiency by 60%, further supporting high-speed driving.
