No issues. They clear inside the fenders, even with a 1" drop, and the tire shop didn't even blink when I asked them to do it. I also know others running the same tires on the same wheels for a while without issues. Not sure why you would think it to be unsafe. Cars have been running tires wider than the wheels for a long time. I could see potential issues if I was trying to squeeze a 305 on a 9" wide wheel, but not the 285.
Enjoyed the car the whole trip to Virginia, i have not driven since i got back to VA but i did get the new wheels put on and decided t just carry back two wheels.
You can fit 3 in the back seats standing up and a 4th in the trunk.
I had to move my seat too far forward so I was a bit uncomfortable, if I was to do it again I would drop one into the spare spot and stack another tire on it. That way seems far better.