Better not go anywhere there are speed bumps! I'm about 1 1/5 and my L/T's scrap on a lot speed bumps I come across. (even some of the ones I come across at an angle)
my car's lowered 1.7 all round and with bbk l/t's, doesn't scrape at all if you know how to kriss it, i only kriss on speed bumps, so far no scrapes. pic in sig, you mite see the headers showing behind the front tires