I installed my H&R spacers saturday night. took a lil longer than i expected but an easy mod non the less.
Im dropped on Tein springs giving me about an index finger thickness from top of tire to the bottom of the fender. My rear tires are 305/30/19 and with -2 degrees of camber they fit perfect! The fronts are the factory advans and they rub every so slightly against the top plactic tab. Once I bend it up and move the fender liner a bit it will be perfect.
Can I run fatter tires up front? prob. Fatter in the rear, no!
link to my album:
Nissan 370Z Forum - fuct's Album: H&R 15mm spacer install front and rear
enjoy!