It depends on the wheel width. I beleive the stock wheels are 17x8.5 with a 0 offset. I believe that you would need about 1/4 of more inner clearance to fit the 315 (essentially 12.5" wide). So if you stuck with a 8.5" wide wheel you would need something with an offset of -6mm or lower (lower the number the more the wheel is pushed outward) If you go up to a 9" wide wheel then you would need something with a -12mm offset or lower.
Starting with a 0 offset (mounting surface is centered between the inner and outer lip of the wheel) the lower the number (neg) the further the wheel will be pushed out from the suspension. If you go too low then the wheel will stick outside the fender. On the contrary the higher the number (+ offset numbers) the more the wheel will be sunken in resulting in less clearance between the rim and suspension. If you go too high on the offset then the wheel wont fit.
2007 6.7 | EFI-Live | Draconian tuned TCM | T4 S366 | ARP | AFE | Fox | Carli