Washing your car does make a visual difference. It is subtle, though. If you do a forum search you can find threads that show it.
Maybe a shiny car is more aerodynamic?
Thanks for pointing that out. I wondered why I wasn't any faster, despite all the lathering.Being shiny is a small visual change on a car and it doesn't affect aerodynamics and even if they did it would change the Performance Points not the HP.
PS are you American?
So I know washing your car ups your HP but does painting it?
PS are you ignorant?![]()
There's no need
If you do an endurance event, your car will look pretty disgusting at the end. But if you don't wash it, it looks clean the next time you use it.
Also, dont forget that a smooth, metallic surface has lower drag than a dirty and rough surface. Personally I think that's the only thing that dirtiness would affect.