For rain, increase the ride height to avoid aquaplaning, boost downforce , and move the brake bias toward the rear to prevent front-wheel lockups.
To get (GP4) running effectively on modern systems and master its simulation physics, you need a combination of technical patches and a strategic approach to car setup. 1. Getting Started on Modern PCs Grand Prix 4
GP4 is famous for its detailed mechanical simulation. A good setup balances for corners and top speed for straights. For rain, increase the ride height to avoid