Re: 16in or 17in? (CrazyGreek)
I debated the same issue and decided to go for the 16" because weight was an issue for me. The only wheels that were lighter in 17" than the 16" BBS RX I got were from SSR and OZ. I decided I didn't like the styles of those wheels as much as the BBS.
Basically look for worse gas mileage, a harder ride because there's less sidewall, easier turning ability, faster top end and slower takeoff the larger the wheels are. I thought 16" would be a happy medium.
I posted a picture on this forum last week of my car. The subject line is BBS RX on GTI. Take a look!