[Slimboyfat]

How does this fit on?

I cannot get it to fit without it rubbing on some other part of the car. I've looked on here through the national pictures and so on of XX4/X5 cars with it on but when I try and copy the way it looks like they have fitted mine just wont fit on freely.

Any Ideas? Even better if there is someone heading to the BWOC @ Hereford tomorrow that can guide me through the process it would be much appreciated.