[thstone]

Really depends on what you're going to change to get 30mm less ride height. There are right and wrong ways to adjust ride height. Do it wrong and the handling could be adversely affected - do it right and the handling could be greatly improved.

Just remember that most mods like this are a tradeoff so be sure you understand what you might be giving up (tire clearance, ride quality, etc) to get the lower ride height.