Is there ever a time when spacers are required? Maybe for aftermarket wheels? Are they mostly for looks? I recently replaced my staggered fr500's for some stock 03 wheels. The front seems a little more tucked in than the back does. This won't hurt performance, right? Also, how can I measure how much of a drop I have? The springs that came with the car are UPR by eibach. I called upr and they said "maybe 1.5 inch?"