Before driving at high speed
First of all, before you drive high speed and self-driving tour, you don't need a car wash at all.
You have to think about the high speed situation. In addition to the dust and dirty mud, there are all kinds of small bugs, one by one, we are hitting the front of the car, dirty and messy.
It's better to drive it down at a high speed, and then wash the car. When the bug and the mud are still not dry, it is easier to do.
Before waxing
What else? Do not do car wash before waxing the car body. It sounds strange, it always has to be washed and cleaned. The key is to wax or coat, its dust requirements, or strictness is very high.
Even if you wash the car, you will drive to the other side, he still has to wash it again, make sure it is spotless, then put the wax on it, or spread the coating on it.
If our car is cleaned, and then go to the car detailing shop, it is a little bit wasted for you.
Before repairing the car
There is also no need to do car wash before the maintenance of the car, many friends feel that it may be my 4S shop, he can wash the car, finished washing up together, this is completely correct, no problem.