A 4 dr like yours has a longer wheelbase , and therefore needs more height to clear a breakover. If you were driving a 2dr, I'd say try 235's first, but since you have a long wheel base, you may need to go with a spacer lift too.
Personally, I'm running 225's on a 2dr for the last several years, and it only scrapes on an extreme breakover, but your geometry is a bit different.