At present, although the "Working Rules for Motor Vehicle Inspection" relaxes vehicle modification, it does not support rear wing modification in policy. Tail modification is an illegal act to change the appearance of the car body. The tail wing of a car is a part of aerodynamic design and can be seen in all kinds of racing cars. Generally, the tail fins of original civilian vehicles are not too exaggerated, and some even use telescopic tail fins.

Some friends may ask, is it ok to modify the tail less than 300 mm? In fact, even the duck wings glued to the rear of the car with 3M will fail the annual inspection and may be intercepted by the traffic police on the road.

The function of automobile tail is a part of aerodynamic design and can be seen in all kinds of racing cars. Generally, the empennage of the original civil automobile factory is not too exaggerated, and some even use telescopic empennage. When the car is driving at high speed, the air passing through the tail can increase the downforce of the car (generally, it can increase the downforce by tens of kilograms, and more can reach 100 kilograms), thus improving the stability of the car. Secondly, a well-designed tail can reduce air resistance and save fuel to some extent.

What kind of tail does not need to be filed?

Regardless of the size of the rear, even if you take the initiative to go to the traffic police department for filing after modification, you will only be ordered to resume, because the Motor Vehicle Inspection Regulations stipulate that the rear modification is illegal and illegal modification cannot be filed. If found on the road, the traffic control department of public security will detain the vehicle, confiscate the illegal device, order it to be restored to its original state, and impose a fine on 200 yuan according to law.

What is the strongest glue at the back of a car?

There are two ways to fix the automobile tail, which are generally divided into lossy installation and lossless installation. Lossy installation will directly drill holes in the tail box cover, and then directly screw the tail wing. This installation method is the strongest, but if it is not handled well, it will easily lead to the corrosion of the vehicle panel, which requires high technology. The other is to paste directly with 3M glue. 3M glue is more firm and easy to remove before annual inspection, so it is widely used. Be careful not to be too violent when disassembling, otherwise it will easily damage the original paint.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)