I'm a little more than 2 inches lower than stock, but on 18's... My front lip is about 2-3 inches from the ground, and I've only hit the lip once or twice, I do however scrape the frame rails on all sorts of things. Just be careful and everything is fine.

 

true the frame rails do scrape once in a while, that happens more than my bumper hitting which only happened once i think, speed bumps are avoided at all costs

 

I can still clear most speedbumps... Just have to size them up ahead of time. Sometimes when I go over them I reach under the car, and can't even fit my finger between the frame rails and the speedbump

 

yea i can make it over low speed bumps, i have a few extra clamps on the lowest part of my exhaust so it scrapes the 50 cent clamp and not my exhaust, not really clamps, the things you use on silicone couplers on intercooler piping, the cheap ones

 

im lowered about 2"? dont really know because im on coilovers. anyway i have to be extremely careful too.. like others have said, going over speed bumps i have almost NO room between my frame rails and the bump... scary stuff! but for the most part, i just either have to slow down, take it at a angle, or find another way in. sucks but thats what you gotta do.

 

the price we pay for the hotness