235/75/15 Tire Scrub

Hi I just bought a 55 Caddy in need of some tires. It has 215/75/15 on it at the moment and I would like to go back to the original 235/75/15s. The thing is the car is air bagged and I'm worried it will scrub or touch when the bags are aired out.
Anyone out there running the 235s on your 55 Caddy had any issues

 

I dont have a caddy, but I did run 235/75/15s on my ford wag, they were 29 inches tall and rubbed like hell, I switched to 235/70/15s, they are around 28 tall and no longer rub. Also see if another offset on the wheels would help.

Brad