We recently completed another 315 tire install at the shop. This time we took some pictures so we could share how we do it and help those looking to do the same thing.
The 315/50/17 tire is a relatively new tire from M/T and a great step between the 305/45 and a 15" conversion. However, the cars we see with these tires almost always have a large spacer to help the tire clear the inner wheel well. This does the job but in our opinion it makes the car look pretty silly. Our approach is to modify the inner wheel well to clear the section width of the tire and keep everything inside the factory quarter panel.
This is what the wheel well looks like from factory.
This is the area we modify. It gets pushed in and smoothed out.
We then prep, mash, and color match paint the area.
Finally the fender liner is cut and reinstalled.
The finished product is a tire that doesn't rub, doesn't stick out, and keeps the car looking clean and professional.
It didn't take long to do. Mine are 30mm offset and I did find some wheels with 32 or 33 which you would need more room
