as a request from JBSPEED telling me to post how to install the e92 front aero lip.
I did not use the preinstalled 3m double sides nebause they were thin. I got a roll of 1" 3m laying around so that's what i used.
the pre-drilled holes on the outside edge is good, but don;t use the inner 2 holes, drill a hole on the flap next it to, there will be a mark, so 1 on each side.
I had to do this because if I use the pre-drilled inner holes, the 2 screws under the car would be in the way, and it'll be hard to push the lip in and trying to get out of the screw's way.
now, after that, I install the middle part first, don't force the double sides to stick yet, cause you might need some adjustments. so, put the middle part in then screw on the 2 holes under it. now u can align it and make it stick.
it'll be the same for the 2 out sides. if you want everything to be flushed and perfect, use a Heat Gun. i got 1 for $20 and it works perfect. i just used low temp, and blow in a motion to where it needs to be adjust, then hold on to the lip and wait till it cools. then it'll harden to that shape. :-)
Pm me if you need more info.
2014 Carbon Black X3 35i M-Sport
2008 SGM 328xi Coupe - retired
2000 SG 323cic - retired