Maybe they’ve changed the mechanics a bit since F1 2010, but I don’t imagine so. I played F1 2010 with a keyboard for a while, but the thing is; you have less control over throttle, brakes and steering. You can barely hit an apex, as you immediately head towards steering lock and the center once you let go of the key. Throttle is another issue; you put your foot down every time you press the key, so you’re much more likely to spin (even with TC on). Brakes the same thing, you’re more likely to lock up or have to do the ’emergency brake’ procedure and pump with the key.
The old Grand Prix games had a sort of ‘automatic steering aid’ that worked even without the more pronounced drivers aids; so you could easily play with a keyboard and still hit the apex, instead of hitting steering lock.
I got myself a gamepad and my times improved by seconds on every track.