You'll want to purchase a wheel that is as close to the stock wheel size as possible. My wheel/tires do not stick out too far, yet I cannot run the stock mudflap and do occasionally get some rubbing on the inner fender liner at full turn. I think my wheel specs are: -6mm offset, 4.75" backspacing.
17x9" wheels with 35x12.50-17" tires:
Here's a shot so you have an idea how far they stick out.
