Spidertrax are the ones most people here use when they want to keep the stock rims and go to a wide tire. The common size is usually 1.5", meaning your wheels will move towards the outer fender by 1.5 inches. Wheel spacers are installed to prevent rubbing, so your stalk wheels won't rub at all.
If wheel spacers are installed correctly and maintained, they are quite safe although some will disagree. You may also have to rotate your own tires as many garages and your dealership won't do it if they see wheel spacers on your Jeep.
There are plenty of threads about this topic, so search some out do some more reading then you'll be more informed on whether it's the right choice for you.