I've never really looked at how close my 315's are to the coilovers in the rear on my car but I've seen no signs of rubbing on any of my tires. I'm a newer body style too though.
Your rear is going to move left/right some as you turn hard. It will move IN on the side that compresses so it may clear your fender, "tuck in", when you turn hard. So you may not have an issue with that.
But in that second picture, that tire looks REALLY close to the the coilover. May just be the picture making it look that way. Can you give an estimate on how much distance there is between the coilovoer and tire?
The side that may clear the fender may also hit that coilover?