I have an '08 kk and its all stock except for a rogue performance muffler

I do quite a bit of highway driving to and from university and work in the summer. But I also love wheeling and want my ride to be a bit meaner/higher/wider/etc. I've seen posts saying on stock suspension, 245/70/R16s are the largest tires possible. Is that true? do they rub? Does it look meaner or sit higher? Or should I invest in a lift? If I lift it i understand I'll want new tires which will be quite the hit to my limited bank account as a student.
Any ideas are greatly appreciated!!! Great to be a new member
