In general, the temperature of the front brake disc should be higher than that of the rear brake disc because the front is heavy and the load is large, and the center of gravity of the brake is moved forward. Therefore, the general car brakes are all front disc rear drums or front vented discs, followed by solid discs. It shows the importance of the front brake. However, it is also possible that the front brake is not reset properly and the brake disc has been worn while driving. This is only driving a certain distance, try not to step on, after stopping the brakes, stop to see if the front brake disc is hot.