someone asked if rain x affected radar performance.
well tonight i did the windscreen and went for a drive and it beeped on the same places it did before so on my test i can conclude i didnt see a performance decrease and so far as i can tell rain x doesnt affect radar detector performance.
and thats using a crap detector and there was no noticeable difference!
but it shouldnt affect anything as its just a non stick coating to the window!
it doesnt contain metal bits its clear liquid.