I'm running 315's on 17x10.5"s LMR fr500s lowered. Had to remove the quad shock obviously. One side the exhaust rubbed sometimes because it was slightly bent so I installed 5/8" spacers and now there's no clearance issues.
I had fr500s with 315 nitto 555s and yes, they rubbed during turns. Tires rubbed pretty bad on the inner wheel well and I fixed the problem by smashing the inner wheel well in with a big hammer.