A car owner said: I ran a high speed once at 6000 kilometers, and when it was above 150 kilometers/hour, I found that there would be moments of drifting, which was similar to the feeling of driving on ice, but it was just a moment.

 

Floating above 150 is normal. After all, you are not a 2 ton car, and whether it floats is also related to the road surface. The highway does not mean that it is a flat road, and sometimes has a certain inclination. But there is no problem on the flat road.

 

It is said that Japanese cars will drift faster if they drive faster, but not as stable as European and American cars. Is it true? Does Corolla float at high speed?

 

The "floating" of a car is not only related to the weight of the car, but also to many factors such as car aerodynamics and tire grip. The following is a detailed answer.

 

The so-called "floating" of the car refers to the stability of the car at high speed. When the car is running at a certain speed, it can ensure the stability of the car body and accurate reverse when it encounters crosswinds, uneven roads, merges and changes lanes, and turns when turning. , And avoid the performance that makes drivers and passengers feel unsafe and uncomfortable. This performance is directly related to the safety of the car and can be regarded as an important part of active safety.

 

Many car owners believe that the high-speed stability of a car is related to the weight of the car. The heavier the car, the better the high-speed stability of the car. This understanding cannot be said to be wrong, but it is not closely related to the weight of the car when it runs at high speed. There are many factors that affect the driving stability of a car, the main factors are body shape, steering mechanism, suspension mechanism and body weight. Relatively speaking, the heavier and wider the car body, the better the driving stability performance may be, because the lift force has relatively little effect on the heavier car body, but it does not mean that the heavier car must be more stable than the smaller one. European brand minicars have very good high-speed driving performance. The key factor is still the shape design and structural design.

 

When a car is running at high speed, the air flow speed in the upper part of the car is greater than that in the lower part of the car. In this way, the car will receive the upward lift generated by the different air flow rate. This lift will reduce the grip of the tires, which will cause the body or the tail to flutter The stable performance of the car. It is for this reason that many racing cars and sports cars have to add some spoilers to their bodies, whose role is to increase the downforce when the car is driving. Generally speaking, the lower the drag coefficient, the better the driving stability, but it is not absolute. It mainly depends on the turbulence at the rear of the car. If the body design is not in line with the aerodynamics, especially the sedan, it will produce a larger lift at the rear. When the speed exceeds a certain speed, the tail will feel fluttering.

 

Therefore, the main factors that cause a car to "float" at high speeds are the car's weight and aerodynamic design. In addition, factors such as the front and rear axle loads of the car and the grip of the tires will also affect the stability of the car at high speeds.