I was hoping to fit some 18s to my Coop when I get it in the next week or so, and wondered what I need to watch out for. From what I gather so far, you need an offset of ET35 and a 3mm spacer, although I'm not sure if the spacer is for all 18" wheels or just a specific brand. Can anyone point me in the right direction? Providing a wheel has an offset of ET35 for example, can you just buy standard spacers to allow it to fit?