The ride is similar to stock, at least on the front. In the rear I'm now running springs from a Z71 Avalanche, which are MUCH stiffer (but awesome for load carrying). Now with JUST the lift on stock tires, it drove worse. The suspension naturally has a little "slop" in it, and with the lift on otherwise stock everything else this slop was magnified significantly. Now with 1.5" wheel spacers and 32's it drives like it used to, evened everything back out.
Tires are surprisingly quiet. Only slightly louder than the cheap as shit dealer installed HT-pseudo-AT tires that were on it. It's very mild mannered.
Ground clearance, I have no idea. About 3" more than stock, whatever that is.