If you are running and keeping OEM suspension, you can run with 15mm all round. If you plan on lowering in the future, to play it safe I would recommend going with 12's mate.
Intentions are to to keep it on the standard sport suspension, if I keep to my intentions is another mater though! It's mainly just the rears that I'm after as they sit to far in the arch where as the front IMO isn't too bad. Unless someone can post a pic up of the fronts also with spacers
How do I go about ordering once decided?