All races done on hard, except the last one at Fuji because screw that!
Sunday Cup: HONDA S800 - Stock car. Very pretty, very small and a very slow car compared to the DS and Giulia. I had to be quick at turns 6 and Corckscrew, otherwise I would be too far from the leaders to have a chance to win. Pretty close race, as you can see from the screenshot:
Audi Special Event: I tried all 3 TT's. The '09 and '14 are quick and easy to drive. I have a very simplistic tune for them: sports filters, ECU and suspension, with the 09' using sports exhaust just because of the sound. Quite an easy race as long as the car can reach 260 km/h on the main straight. Also easy to win if the race leaders are using the '03 model, because this car by default is racing with comfort tires.
Unfortunately the best I could do with the '03 without permanent upgrades was a 3rd place. Even tried with low/medium turbo, but still no good. However, I really wanted to try a strategy (inspired by
@BWM) I used quite a while ago to win Tokyo 600 with low powered cars using Racing Hard tires. It can be fun, engaging and kinda funny.
So my TT have Full ECU, sports filter, sports brake pads and Racing Hard Tires. It's total suffering when the car is struggling to reach 250 km/h on the main straight, but it's a very pleasant drive after that. Still not an easy race, but very fun! Not gonna lie: I had to block 2nd place at the last lap, entering the tunnel
K-Cup: I think we all have a tuned k-car because of the Human Comedy mission, right? And this tuned little car can easily win any world circuits events, so this time I decided to try something new: the Jimny!
That green little-big cute car is my dirt-spec Jimny. Extremely high suspension so you can imagine the absolute rollecoster and nauseating experience that is driving this car with bumper or hood cam. Not very good for tight corners, but it does have decent acceleration. Got 1st place at the beggining of the last lap.
Porsche and Gr.1 events: I don't have much too say about them. The Porsche event can be a little tough because 1st and 2nd place start with a big gap and they're using modified cars, but as long as your Porsche can reach 260 km/h at the end of turn 1 you should be good. Using any GT3 RS is guarantee victory.
Fuji is a nice track because of dynamic weather, but I don't think the races we have there are fun. For this one I changed difficulty to normal and won the race with a random Gr.1 car.