I have a JLUS with a rubi suspension swap. Looking at snagging new tires to go on the stock rims. I know this question has been asked before, but I have creeped the forum a good bit and want to get a definitive answer. I am looking at going with 285's but would love to fit 315's. Would I need additional lift to keep from tearing my sport fenders off flexing on trails with the 315's?