Quote Originally Posted by chituntang
The only way you can run a 17*9 on a S13 is pretty much a wide body kit if you want the make the wheels sit flat to the body IMO. Just not enough room in there.

The front should be about 235 to 245 45 17.
The rear should be about 255 to 275 40/45 17.

The biggest problem is tires make by different companies have a little different size. I had 215/45/17 FK-452 tires on my 17x7.5 wheels and the sit square with the wheels. My buddy had the same size tires with same size wheel, but different tire company and his does not sit square. It is not like a stretch, but just goes in a bit.
I may be wrong though...

i have to disagree, i ran 18x10 in the rear and 18x9.5 in the front and i had a 255/65 series tire fit fine, with slammed suspension.