I have done some research and measuring, I got a 03 350z, just got Z1 Akebono BBK, (Rears clear no issues with 25mm spacer). my front wheels are 18x8.5+35 (SuperAdvans(they have about 12mm for lug bolts to tuck into if needed)) tires on front 255/40-18, car is lowered about 1inch(fender is just above top of tire tread), Im pretty sure all i need is about 10-15mm spacer to clear the BBK, my question is, if i got 20mm spacers for the front would that come close to any rubbing issues on turns?

 

What size tires? Rubbing wouldn't be an issue unless you have some crazy fat tires in the front. With 15mm spacers you would be at +20 which is still very conservative since 8.5 is fairly narrow.



I have 19x10 +15 Advan RSDs on 275/30 tires in the front, no rubbing issues at all.

 

perfect,thank-you very much(front tires are 255/40-18)