I have a 72 Nova with a stock rear end and I just bought a pair of 16x8 wheels with 5.5in backspacing for the rear tires. I was told a 255/60/16 would fit just fine. Does anyone know this to be true? I'm trying to get as much rubber down without rubbing anywhere. I currently have 15x8 rims with 3.5in back space and 235/60/15 and they rub to the outside when I hit a deep bump. Help?