The Integra Type R is the best overall car in the game wet or dry weather when chosen with Parts Course A. Extremely cheap, Stock one can beat a 100,000 pt RX-7 Type R.

The Other really good car is the Course A Trueno GT-APEX, you get the new motor at the end..

That car should be chosen if you plan on playing the game regularly. The Type R is the best if you only play from time to time.