Fuhgeddaboudit.

This forum (bmwhaus.ie) is dead anyway.

How did i end up here in the first place?...someone tried to poach me from bmw-driver.net i think.

Anyway, the UK forums are full of info and much much more alive, so why bother....

even boards.ie motors forum is more alive.

BTW, i've ordered both sizes so will answer my own question after i get down to doing it.