Hi Lucas and welcome to the world of VW. I can see what you are trying to do and can picture you running into some problems if you want the best of all worlds - wider, bigger tires
and disc brakes. Check out " wheels, tires " on the web site CIP1. They are a big supplier and have a wide range of custom and stock rims. I went through it myself and all references are to 15 " rims. You will note that the only references to 17" rims are for the New Beetle. That said, they do offer some very nice wider rims. The stock ones were 5 " and 5 1/2 " but they do show mag style rims up to 6 1/2 ". Much bigger than that and you had better start looking for flared fenders or your paint will be short lived on the outer edges of the fenders. Your car will have the stock four bolt rims. In order to get disc brakes, which I highly recommend having driven on the press and pray four drum stock set up, your disc conversion kit will be a four bolt pattern. Now comes the crunch. You could explore other generic 16 and 17 inch five bolt rims and use a set of the wheel adapters which will attach five bolt rims to your stock four bolt drums; but to a four bolt disc? That I do not know other than the wheel adapters tend to be a nightmare for wheel balancing and offer more problems for your tire fit under the fenders. My bug, a ' 72 convertible, came with wonky aftermarket five bolt rims and adapters. I sold the whole works and went stock and never looked back. There may be four bolt 16 and 17" rims out there for Hondas or other compact imports. You need to know the bolt spacing and the set back and hub size of your disc set up. If you have to sacrifice something, stick with the wider 15's and avoid at all costs using adapters. Dan (MY72BUG) in Goderich, Ont.
I'd rather have a partial bottle in front of me than a partial frontal lobotomy.