Why are ventilated discs not used for rear wheels?

[DiVictoria]

The reasons why ventilated discs are not used for rear wheels are as follows: 1. The manufacturing cost and material requirements of ventilated discs are higher than those of ordinary brake discs. The braking force distribution for rear brakes is generally only half that of front brakes, and the heat generated by friction is much less compared to front discs. Considering cost and actual performance, manufacturers usually adopt a design with front ventilated discs and rear ordinary discs. 2. Ventilated discs are designed for better heat dissipation. Since the braking force on the rear wheels is smaller, the heat generated is also less compared to the front wheels. 3. The braking effect mainly relies on the front brake discs, while the rear brakes only play a supplementary role. Therefore, there is no need to use high-performance ventilated discs for the rear wheels.