This has to be one of the most annoying things in life. I hate playing Computer games with a keyboard, it is not the same thing as playing with a controller, it has a totally different feeling to it.
It's really different using a keyboard, but I can still definitely get into any race with a keyboard, just harder.
I wish you the best of luck. I feel like it may be difficult to try and drive properly due to the fact you can't use a keyboard to get precise movements and accuracy. Trying to use a digital medium for an analogue control.