Hi Hinyaldee
Please check out the developer blog from spring 2023
https://igpmanager.com/blog/159/developer-update-spring-2023
Car models are in progress.
For the tyres, you are missing something in your consideration. While the teams only take 3 compounds to each track, they are rated from C1 to C5. So they have 5 compounds available, but only bring 3 to any one track.
They used to colour these in from purple (Ultra Soft) to Orange (hard) but quite a few years ago now they changed the way they marked the tyres to simply things for the audience. Now it is always marked red, yellow, white from softest to hardest no matter which of the compounds sit behind it.