OK. here's a few tips on how I installed my M5 rear spoiler.

Attachment 29955

Attachment 29956

One hell of a smart and handy guy! I like your DYI very much. Very intuitive and easy for us to follow!
Another Kudos! :thumbsup:
Looks good! with spoiler isn't it? :)
The penalty is 0.0001 mpg mileage reduction from now on :whistle:

Thanks Fred !

yep, I'm gonna have to redo my budget for the increased fuel expenditure !! :lol:

did my spoiler today and forgot the space for the moisture.... :think: you should have posted it yesterday.

attached the spoilers today...i put them a tad closer to the back

very nice PDF DIY.
thanks :thumbsup:

nice job khooger !

:thumbsup:

Hi to all

Sorry for digging out veeery old thread but I have a very irritating problem with the same spoiler.
Its a genuine bmw spoiler. I bought it with a 3m vhb tape.
Installed it about two months ago.
Was fine till two weeks ago. I spotted that two ends are lifting off.
It was right after a car wash.
So I decided to remove and buy some diferent tape than. Tried few but every time next day the same problem.
Decided to try in BMW and found one.
I went throu Your great instruction.
Cleaned everything with Solvent based cleaner. Remoed wax etc.
Weather was great so installed my spoiler and left it for 24h over night and very sunny day with loads of electric tape holding it in place.
Removed a tape after that and drive. Two days later in a sunny day I see lifting ends...

Help please...

I'm having the same problem.
After two attempts with different tape everything cleaned etc.
Still lifting on the corners.
My friend who owns a body shop says we are going to have to glue it??
What do you guys think?

Dang that sucks, sorry to hear that some of you are having issues.

Dean, if it's never gonna come off, then glue it, lol.

And you guys sure you used the better kind of 3M tape? There are several different kind, and the strength is considerably different.