Tire question

[sinned]

You are very limited to the rear. The smallest tire that should ever go on a 11" wide wheel is a 285/40, then there is 295/40 (race version only) and the almighty 315/35. Whichever tire you choose for the rear will help to determine the tire for the front. With an 8" front wheel (too big a split in my opinion) you should be running a 255/40 or so to match the 285/40 and maybe even a 265/40 (if it will clear) if you go with a 315.