there are a bajillion permutations of standard and P-Metric sizes to get you there....but those are the maximum dimensions you can get by with in a stock JK with minimal rubbing.
There are countless threads on this topic and each will provide you with a grain of information necessary to compile a complere picture of what you want...and what you need to accomplish it.
Changing wheel sizes will SAVE you money and might be necessary to reduce rubbing.
Wheel back space. Wheel construction and brake caliper clearance.
Side wall composition, balancing, mud vs all terrain speedometer and computer calibration.
Airing-down criteria and limitations.
All good stuff to read about....enjoy.
There is a specific section on tires and wheels.