1/2"? Yikes. I mean, there are a few different backspaces and widths for those wheels and the copycat versions of them so I may be wrong, but I wouldn't think 1/2" spacers would be necessary. 1/8" or even 1/4" I could understand, but even with all the versions of the 17's I can think of I don't think any would need a 1/2" spacer. The most popular size for those is a 17x8" with a 5.72" backspace, and most folks get them clear of the tie rods with an 1/8" spacer.
