I dunno, can't seem to find much about this, been looking for quite a while, but the version of GT7 I'm playing (PS4, disc, <> buttons on pad) doesn't do a great job a recognising a car's bodywork as physical?
At first I thought it was something to do with height i.e. high kerbs, when car is horizontal. But then I tried different things like going off road, might be Watkins Glen I think.
Then I tried going up a bank and pointing car down towards the ground, whichever way I tried, bodywork just 'disappeared' (?).
What's weird is that at places like Tsukuba, that has an open pit entrance, there is something physical stopping the car from driving over the grass verge if you miss pit lane entrance, so the game has someway of recognising the 'car'(?) sometimes.
I'm guessing this is just a PS4 thing???? I've searched for things like GT7 bodywork / glitch / bug etc etc but can't find anything like this????

