http://cgi.ebay.com/ebaymotors/18-Ri...QQcmdZViewItem

I am thinking about purchasing a set of these to hold me over for a while. I don't like my Motegi DP6 rims. They are only 17x7.

The Zuka rims have 45mm offset, I was wondering what size space I should use to push the tires out flush with the fenders?