I run 30x9.50's everyday on the street. It rides well. It's a good match for the 4.30 gears and 22re. I also have bj spacers and 2" rear blocks.
For the trail, however, I run 34x9.50s, no rub issues.
If I were to have just a single tire size for street and trail, I would look at some 31's or...