I would think so. The tire profile is lower (i think they're 295/30/22 and 325/25/22) so there's a little less sidewall flex, but he put on Continentals which are NOT runflats so it's probably an even trade off.

The springs are clearly the biggest change. Aesthetics vs comfort.

One thing is the exhaust sounds GREAT. Not too boomy from inside but it GROWLS when you step on it. Mufflers are tiny as well so there is some weight savings to be had, which shoudl mean better MPG, except for the fact that he lays into it at every takeoff!