Im going to try road cars soon but if your looking for a pretty easy win... Fit a zonda lm or zonda r with a high rpm turbo, limit hp and tell him to go win. I used a zonda lm and won 3/3 times i did it. Took first 3/4 through the first lap and said bye bye. Bob is level 39.
That's all I've used. 12 black edition GTR. It took some coaching on the first lap and easy sailing after that. R390 roadcar was a set it and forget situation, easy win.
400 PP - Nissan Primera. A new build I put together yesterday, because the car is so damned fugly
500 PP - New Honda Civic Type R, build surced from RKM in the Tuning Forum.
650 PP - Corvette ZR-1 (C6) RM, frist place before the end of the first lap, against the Ford GT LM Thingie. Used Avid Racing Factory build for the car, have done for a long while now...