I like to run 16" Fuchs, 7's and 8's with 205/55 front and 225/50 on the rear. I've also run 16x7's w/225/50's all around. The height difference is neglible (a tad shorter) between these sizes your OE 215/60/15s on cookies. Take a look at
http://www.dsm.org/tools/tiresize.htm for a good tire size comparison.
iirc, the Fuchs option was 15x7 and 15x8 for the early cars. Not sure when the 16's became an option.