offset

So got a question for you guys. My beetle has a 5x100 bolt pattern with a 42mm offset and a 16x6.5 wheel. How hard would it be to get a 17x7.5, 51mm offset, 5x112 bolt pattern on it? I'm not sure how all that works.

Hi, Just back in a NB! very pleased, finally got a 1.8t - had the 1.6 and 2.0 before. Its already runnin 210 bhp courtesy of Revo... Bu I have questions ! Thanks for anyone that can help... what is the ideal ofset for beetle cab wheels? what is maximum practical wheel size? 18" what sort of...