The brake disc will deform when it is watered, but what about when it suddenly rains while running a
TIME：2020.02.28
Many experienced drivers know that a sudden watering of the brakes in very hot conditions can cause distortion. Therefore, some people suggest that just run high-speed first do not wash the car, let the car cool before washing, is also to avoid the brake disc after being washed by water cause deformation. It's okay not to wash your car, but if it rains for a while on the highway, will the brakes buckle? How should the brake disc be protected? The life of the brake disc is very long, do not need to do any maintenance at ordinary times, wear to the limit can be replaced. Although it is possible that the brake disc will deform when suddenly watered, it is very difficult to deform because the temperature of the brake disc can not be reached. At high speeds, the brakes need more braking force because of the speed, so the brake discs are thought to be hotter. But on high-speed driving, if the speed is relatively high, that the road is smooth, the natural frequency of braking will be very low, may run more than 10 kilometers do not need to step on the brakes. As a result, the brakes are not hot or even cooler than driving in the city, and rain or water splashing on the brakes is not a problem. Because the current brake disc are ventilation disc, and even perforated disc, heat dissipation effect is very good, even if the brake frequency a little higher, the brake disc itself will not be too high temperature, watering is not distorted. In urban driving, although the brake frequency is slightly higher, but because the speed is slow, each time the intensity is not big, the brake disc is not too hot. Driving in the rain or water in front of the road, there is no problem driving past. As can be seen from the actual brake disc maintenance, there is almost no water caused by deformation or cracking of the situation. Of course, if the road is a long slope, and did not use the engine brake, relying on the brake to control the speed, then the brake disk temperature will be very high indeed. When it rains, the brakes will buckle. Of course, this is not just a matter of water deformation, it is likely that the brake will be too hot at the time of failure. So the long downhill we have to consider is to reduce the burden of the brake, not brake disc deformation problem, as long as the burden of the brake is small, the brake disc will not deformation. In fact, there are many cars will appear the phenomenon of brake shaking, which is the brake disc uneven, some places high and some places low caused. This is a problem of wear and tear, not a problem of deformation caused by watering, which happens to a few thousand kilometres of new cars. This is repairable, just take the brake disc to the lathe and re-grind it. If it is because of watering caused by deformation, brake disc strength is greatly reduced, is not repairable, need to replace the disk. Therefore, as long as we normal use of cars, not specifically to accelerate the Meng brake, do not have to worry about the deformation of the brake disc watering.
