Crashes are realistic enough for me ... but the damages made to the car aren't ... I already crashed in a wall at about 200Km/h and I could still drive very well . I'd also like to see scratches on the paint and maybe cracked windshields

I also noticed when you crash in a wall , you can see both sides of the weel but they're floating , that would be some nice things to do if you want more visual realism ...

For the physics , I think LFS is the leader