If you're grinding for credits, do the Le Mans 30 min race. All you need is the Porsche GT3, which only cost 350k in credits, and buy intermediate tires. You don't need to, but I'd buy racing brakes for it. Start the race on racing hard tires, fuel mix 1. Pit after lap 2, slap on the intermediate tires and top fuel off. Pit after lap 4, put racing hards back on, top fuel off, and finish rest of race on fuel mixture 6. That will give you 1.65 million credits every hour with the clean race bonus.
If you're grinding for credits, do the Le Mans 30 min race. All you need is the Porsche GT3, which only cost 350k in credits, and buy intermediate tires. You don't need to, but I'd buy racing brakes for it. Start the race on racing hard tires, fuel mix 1. Pit after lap 2, slap on the intermediate tires and top fuel off. Pit after lap 4, put racing hards back on, top fuel off, and finish rest of race on fuel mixture 6. That will give you 1.65 million credits every hour with the clean race bonus.
That is a good one too.
Many many options out there with cars. I have one coming out for that track as well.