some guy just borrowed my stock 17x8's to drive up to WFC8, and was putting 315's on them. I guess he made it there and back, but I wouldn't recommend it. a 245 is 9.6" wide roughly, and a 315 is 12.4" . Click on my link below, there are some pictures of 295/35 tires on a 10" rim. for a 315 you need atleast 10+" 's wide. They would probably spin off of your wheels. they look right on an 11" wheel. my 2 cents