NamelessGhoul13 says all, thanks to her/him.
Considering it's your first car made from scratch with all the struggling it means (modding IS DEFINITELY NOT so fun and friendly), it's in the right way, you keep improving the car, that's great.
Regarding issues, after trying this car for a few laps on Donington Park, the tyre sounds are missing, which makes the driver's job more complicated but the worth is how far too easy to drive is this car, I achieve a 1'15"508 without pushing hard (I think :) ), and I'm not really a F-1/single seeter fan (except for low power cars like the Tatuus and the F312)
Looking forward to your progress.