joypads give you lots more car control, and it makes vehicles have better grip
Depends what you're the most practised at. I used to race with keyboard, and became better than I am with joypads. Then, I got a joypad and sucked with it, so much that I stopped using it. Later, I decided to practise with it, and now I'm alot better with one. And about the better grip, I haven't noticed that, cars spin just as easily for me. Might depend on the type of joypad, cuz I have a ps2 one and it's exactly like keyboard, with a different layout.