I'm thinking about trying to put together the cash for an ESS supercharger. I already know that in order to reap the benefits of 410+ hp, I'll need bigger wheels & brakes... which adds a few grand to the operation.

1) Any suggestions for good places to find BMW wheels for relatively inexpensive? Has anyone had any experience with aaarims.com?

2) Is there anything else I should need to upgrade under the hood at the same time as the supercharger?

Thanks!