^^^He's talking 17s not 18s.
Your going to have to pull those tires in pretty far with the camber plates to prevent rubbing.
I'm taking a wild guess, but I'll bet with the Pro springs (on stock SVT wheels),
you're going to need between -1.5° to -2° to keep from rubbing.
Here's mine on stock springs, and no camber plates. (-0.9° to -1° from factory).
^^^Scroll through the thread a bit to see the "installed" pics.
If you've got aftermarket wheels with a lower offset than the stock 49mm, nix the 225 idea.