Can anyone confirm that it doesn't get reset? Personally, I wouldn't mind using the windscreen wipers, being a realism freak, but mine never seem to affect anything other than rain.Look in your PLR file under Graphics Options and find the line "Windscreen dirt buildup="1" change the 1 to 0.
It may reset during gameplay tho, haven't tested it myself, but the option is there.
I think you'll find that isn't dirt Kris. If it looks like a small black smudge with a white halo around it thats a windscreen chip caused by light collision, driving through a debris 'cloud' or closely following a car on a 'dirty' track.Even after a full lap with wipers on, there remains dirt (on the inside?) of my screen. Even when pitting in, the crew refuses to clean it