I see your problem. neilbah went straight for the throat, if you ask me.
Everything has a solution
Try this, perhaps it will not crash (you have to register to download):
Bob's Track Builder
If it works in your PC, you can export directly to rfactor without using 3DMax and then you will have the deep satisfaction of trying a lap around the track (after downloading and installing rfactor, of course).
I'm guessing here, but once you lose the rear a couple of times in curve 13A (between curves 13 and 14
and then only if you use a friction factor low enough, like in the rain), you will change it, because you'll realize you're going out of the track at almost 300 kph.
You will also (I imagine) change the curvature at the entrance of some of the hardest curves, like curve 12, end of curve 2, etc. after a couple of laps and then, in a moment of profound understanding, will realize what an spiral is and why nature use it.