Keep in mind that the bigger the wheel the heavier, including the rubber.
How were the launches on the 14's? If you could control them and not loose traction then by all means. Why not take both and see?

I myself prefer something with a higher sidewall and average rim.

Right now its on some 16's with 225/45 sidewall. think it was 50... eh

what track you going to? Help me get the clipse up and im there ! lol