I recently took off spacers from the front and rear (F:18mm & R:15mm). I specifically targeted the rear because my 295/30/19 (Yokohama advans) on my right side was too close to the fender. I am considering on putting either the 15mm or 18mm in the front now? Any suggestions? Is it ok to just have a pair of spacers on the front? If so, which ones would suffice on my current setup? Trying to maintain that aggressive look!