You will need a 10" wheel with a 5.5 backspace and they will clear. You do need air shock but if you have a week rear suspension you may experiance some rubbing with a full load in the car. I have run the same wheel with 305-50-15 tires for many years and have never had any issues. I currently have 325-50-15 on my wheels and with the quarter panel lip rolled are able to stuff them under the car. If you are looking for some meat up front you can use a 15x8 wheel with a 4.5 backspace and a 265-50-15 tire with no issues.