I got Nvidia and the same problem, when you race you didn't notice it but when doing 1920x1200 screenshots it really gets annoying. I think I'll install back old drivers which were ok, but I have really no clue what this come from. That time helped 0xAA ingame, 16xAA windows and it looked flawlessly. Hope it's only the new driver change...
Lynce - PRO WORK! R.Osza - Very good colors and nice pictures, but they are all from the same and easiest angle to make motion blur. Try from a different angle, picture will come out greater, but you have to do a bit more work to it. That last one is mint. You have a potential.
I think the brakes look fine now. My simple solution was to cut out the inside of the rim, place it on a new layer above the wheel, blur the wheel and put layer option of the rim to "overlay" and lower the opacity to around 30%.
You can also always play around with other effects too.
There is really fast edit of one screen i made after demo race It took about 5 minutes but i like that cars standing there ... i would like to drive with a few people just for photo round or something