Re: Another tire and wheel thread.....
You'll likely rub when the wheels get close to lock in the front. Even with spacers you'll still run in to that. I think the biggest you'll be able to go without a lift is 275/65.
Also, from what i've read here, the available spacers for the WK2 have not been successful for those that have tried them. You may be better off selling your oem 18s and picking up a set of aftermarket wheels in the offset you are looking for. Something 18x9 in a 25 or 35 offset. MB TKOs come to mind.
2012 Stone White Overland Hemi ~ Altitude grill and brow ~ SRT8 reps ~ Falken Rocky Mountain ATS ~ Mopar pedals ~ SRT8 side lettering ~ 20% tint all around ~ Volant CAI ~ HF Tune