Which brake disc to choose ?

First of all, we need to know what the role of the brake disc is, the brake disc is a very important part of the whole brake system. The brake disc must be used for braking, and its braking power comes from the brake clamp. Generally speaking, the general brake clamp is fixed inside the part of the brake piston pump, the outside is a caliper type structure. The inner brake disc is fixed on the piston pump and the outer brake disc is fixed on the outside of the caliper. The piston pushes the inner brake disc through the pressure from the brake line, and pulls the caliper through the reaction force, making the outer brake disc inward. Both press against the brake disc at the same time and generate braking force through the friction between the disc and the inner and outer brake discs. In this process, the piston is pushed by brake fluid, which is hydraulic fluid. This one is engine assisted.
For the hand brake, the cable is used through a lever structure mechanism, forced to pull the brake disc, so that they press with the brake disc, thus generating braking force.
Punch plate. The effect is stronger heat dissipation effect, higher strength of the brake, will cause the temperature of the brake disc to increase sharply, so the need for more air flow for heat dissipation, only by the effect of the ventilation disc can not meet, usually using multi-piston brake calipers, need more efficient perforated ventilation disc. (The perforated brake disc is suitable for use on the general track and advanced sports cars. The perforated brake disc is to dissipate heat and improve the anti-thermal performance of the brake.)
Scribing disk. The main function of the crossing brake disc is to scrape and discharge the brake powder worn by the brake pad through the line groove of the crossing, so as to improve the braking force. Both are in order to improve the performance of the brake. (Crossed disc high temperature resistance effect is good, heat dissipation is good, run mountain road with this kind of disc is better, of course, the best brake pad is also the best choice of high performance.)
The perforated and marked brake disc, also known as the "high speed disc" or "change disc", is usually fitted to high performance cars, such as racing cars, sports cars or sports cars. Punching and crossing brake disc is a double-edged sword, his good and bad is also the same, but the brake disc on the brake pad wear will increase, the brake disc material and processing requirements are relatively high. (The perforated and crossed high performance brake disc can meet all kinds of road conditions, with strong high temperature resistance, good heat dissipation, improve the performance of the brake heat decline resistance.)
One of the reasons many owners upgrade the original brake disc. The original brake disc is generally a solid disc, is the most common one, is also the most used by the original factory. There is no internal air duct, no heat dissipation function such as punching holes and marking. The advantage is relatively stable, is generally normal wear, regular replacement can be. Disadvantages of the original car brake disc size is small, small friction area, no pattern on the plate to increase the coefficient of friction, the most important is that the original disc is no ventilation groove heat dissipation, high temperature resistance performance is poor, high speed brake safety factor is low.

Advantages after upgrading the disk:
1. Disc brake heat dissipation is better than drum brake, which will not cause brake recession and brake failure when stepping on the brake continuously.
2. The change of the size of the brake disc after heating does not increase the travel of the brake pedal.
3. The disc brake system responds quickly and can do high frequency brake action, so it is more in line with the requirements of ABS system.
4. Disc brake does not have the automatic tightening effect of drum brake, so the braking force of the left and right wheels is relatively average.
5, because the drainage of the brake disc is better, it can reduce the situation of poor braking because of water or sediment.
6. Compared with drum brakes, disc brakes are simple in structure and easy to maintain.