Xiaomi Set to Launch Ultra Version of SU7 with Largest Ceramic Brakes
Reports from Chinese media suggest that Xiaomi will unveil the Ultra version of the SU7 at their upcoming product launch event on October 29. CEO Lei Jun teased that the car will boast the largest ceramic brakes ever seen on a sports car.
In a Weibo post, Lei Jun announced, “Xiaomi SU7 Ultra is equipped with competition-grade carbon ceramic brake discs, with the diameter of the brake disc being the largest among sports cars!”
The front brake disc measures 430 mm x 40 mm, while the rear brake disc is slightly smaller at 410 mm x 32 mm. These ceramic brakes can withstand temperatures exceeding 1300°C (2372°F).
Ceramic brakes are commonly found in high-performance and racing cars due to their lightweight nature, durability, and resistance to high temperatures.
These materials can handle temperatures over 1000°C without suffering from thermal degradation, making them ideal for intense braking situations like those on a race track. They are also significantly lighter than traditional cast iron brake discs, improving the car’s handling. Additionally, ceramic brakes have a longer lifespan, lasting 3-5 times longer than steel discs, although they come at a higher cost.
The Ultra version of the Xiaomi SU7 is optimized for performance to avoid any issues like degraded brake performance seen in previous models. It is expected to start at over 800,000 yuan (112,250 USD), with estimated sales of 4,000 units in 2025.
The road-legal Xiaomi SU7 Ultra will feature the same powertrain as the Prototype version, consisting of three Xiaomi super motors (two V8s and one V6). This setup creates a three-motor four-wheel-drive system with a total power output of up to 1138kW (1548PS), resulting in a rapid acceleration time of 1.97 seconds from 0-100 km/h and a top speed exceeding 350 km/h.
The car is equipped with a 150 kWh battery pack using the Qilin 2.0 battery from CATL. The CTB structure integrates the battery into the car, enhancing rigidity and reducing weight. With a maximum output of 1,330 kW, the dual-surface cooling system improves cooling efficiency by 60%, particularly during high-speed driving.
Source: Fast Technology
