I need help with offset, I'm gonna order a Iforge on Friday, Size is 19x9 F, 19x10.5 R. But I have no idea of which offset I should use. I will lower my car with RSR spring. and add a Big brake Kits. Please help me.....anyone had Iforge or HRE with lower body and a Big brake Kits ? I need your offsets please!....