Originally Posted by Modshack

Spacers from: WWW.ICHIBAUSA.COM - Hubcentric Wheel Spacers, OEM S13 5-Lug Conversion, Header, Turbo Manifold, Downpipe, Test-Pipe & More Performance Parts!

Why 15's?....They fill in the wheel wells very nicely bringing the tires almost flush to the fenders. Won't cause a problem if lowered in the future. 10 was too small, 20 too big, 15 just right IMO..