Mine is the same except they are a +40 offset. A +42 offset will be very close to the rear trailing arm, if not rubbing. The simple and best solution is to go to www.onetongarage.com and get a set of the rear spacer shims. That will push the rears out and eliminate rubbing concerns, plus it gets the rear wheels out towards the fenders and makes it look more even with the fronts.
I have 17x7.5s and am running a 3MM spacer in the front. Im running the shims in the rear. The rubbing i had was minimal, considering i have 45 series tires. Just some simple cutting of the plastic wheel well and taadaaa all done.
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