Define no problems at all? Your acceleration WILL suffer using such a large rim, measured your speed with a GPS lately? I bet your dash speedo is off in comparison... What's the weight of those vs stock? etc Everyone has their personal preference of course, but there are certain drawbacks when it comes to using big foot wheels that people should be aware of...
If it was a track car, fair enough, but i'm assuming Adam isn't building a track weapon, or are you? If not the only benifit of going to a smaller rim size is for the ride, and i can live fine with mine, but i know some people can't, each to there own.
They're still things to consider as applications do vary, and most people do like to know the speed they're going even if they're not on the track. Something about speed limits or something stupid like that!