I bought a cheap m5 trunk lip spoiler wont glue down!!
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Joined: Oct 2008
Posts: 1,185
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From: B-Ham, AL
My Ride: '06 550i
'84 Nissan S12 Turbo
Throw into closest dumpster and buy my RD Sport spoiler I have for sale. 
Fits like a glove, and was held on the car with only 3M double sided tape for over a year...never an issue
Fits like a glove, and was held on the car with only 3M double sided tape for over a year...never an issue
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Joined: May 2009
Posts: 10,496
Likes: 2
From: SoCal
My Ride: 2008 550I LOADED, all options except HUD and NV
I bought roof and trunk spoilers from a Chinese ebay seller and was very happy with them, both held on with silicon and 3M tape for more than a year.
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Joined: Mar 2011
Posts: 13
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From: Keesler AFB, MS
My Ride: C32 AMG fully modified - 535i Sport, work in progress
Don't do it! Dump it on ebay (or return to seller since it sounds like an improperly made POS) and get an OEM one that will fit properly. Don't put holes in your car over bad parts....gonna make a bad situation worse and end up with another lesson learned the hard way.
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Joined: Dec 2007
Posts: 8,998
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From: St. Louis Burbs, USA
My Ride: 2007 530i. Purchased 6/28/07. Titanium Silver Metallic, Black Dakota Leather, Dark Poplar Trim, Steptronic, Premium Package, Cold Weather Package, Bluetooth, Adaptive Control Xenons. 10/30/07 Added OEM 124s with 245/40/18 & 275/35/18 Michelin Pilot Sport A/S tires. Installed red Cal Covers� from BavAuto. 11/21/07 Added OEM all-weather floor mats (for winter, carpet in summer) and coat rack. 6/26/08 installed M5-style rear spoiler. 6/30/08 put on red reflectors. 8/22/08 Euro turn signal stickers applied. 3/20/09 Installed Shadowline Trim. 3/27/09 Added Matte Black Kidney Grilles from Trinity. 4/03/09 Installed Bimmian Shadow Matte Black 530i Badges. 4/04/09 Installed LED license plate lights from Trinity. 5/01/09 Installed Brabus Interior LED Kit and White Angel Eyes. 5/02/09 Put in Brabus 6K Fogs. 5/14/09 Removed charcoal filter. 5/15/09 Installed light smoke LED side marker lamps from Trinity. 5/21/09 Sprint Booster. 6/12/09 Painted exhaust tips flat black. 6/13/09 Pulled red Cal Covers and painted calipers low gloss black. 6/27/09 RPI Ram Air Scoop from Trinity. 8/15/09 Installed Brabus's silver invisibulbs front and rear. 9/24/09 Installed R-Dash license plate LEDs from Brabaus (John).
You have to get every single piece of the tape that came on the spoiler off and clean the surface with isopropyl alcohol before you start. Use the OEM double sided or the heavy duty 3M stuff and press down as hard as you can while applying blue paiter's tape and stretching it super tight. Then, use a massive amount of the tape to hold it down. I mean A LOT of that tape and I mean squeeze it down TIGHT. Cover the whole trunk if you have to. I'm not kidding. If that doesn't work, then set it on fire and try a new one.
https://5series.net/forums/topic/107...1#entry1281051
https://5series.net/forums/topic/107...1#entry1281051
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Joined: Mar 2010
Posts: 52
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From: Tucson, AZ
My Ride: Current rides:
2011 Z4 35i MSport DCT (pictures coming)
2010 535i MSport
2008K1200GT
(Sold) 2001 541i MSport
(Sold) 2007 Z4 Coupe
Just wondering how you prepped the trunk lid prior to trying to install? Ooops! Missed CW's reply. My point as well.
If that doesn't work, try claying the contact area to remove any wax or poly sealants, then put down towels over the lip and trunk and hold it all down with some weights (plates) or other heavy objects for a couple of hours. Don't think China has anyhting to do with it.
BTW-What side is disbonding? The spoiler or trunk side?
If that doesn't work, try claying the contact area to remove any wax or poly sealants, then put down towels over the lip and trunk and hold it all down with some weights (plates) or other heavy objects for a couple of hours. Don't think China has anyhting to do with it.
BTW-What side is disbonding? The spoiler or trunk side?
Senior Members
Joined: Jul 2010
Posts: 942
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From: Chattanooga, TN
My Ride: 08 528I Sport/Prem
3M double sided tape worked wonders for mine. I prepped really good and cleaned the spoiler very well with adhesive remover, washed my trunk lid really well by hand, apply the 3M tape along the edges very carefully, pressed on, and boom 
Its been 7 months and no issues at all.
I don't see how it would be hard to do unless the spoiler is so bad it is bowed up along the edges to prevent flush mounting.
Its been 7 months and no issues at all.
I don't see how it would be hard to do unless the spoiler is so bad it is bowed up along the edges to prevent flush mounting.
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Joined: Jan 2011
Posts: 217
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From: Fort Worth, TX
My Ride: 2004 525i Alpine White / Tan
What eBay seller did you use? Im about to purchase an ACS style trunk spoiler from what that Ive read some pretty good reviews about but if you say yours is perfect and you didnt have any issues im interested in knowing who the seller was...
Contributors
Joined: May 2009
Posts: 10,496
Likes: 2
From: SoCal
My Ride: 2008 550I LOADED, all options except HUD and NV
I got them painted from here 4A-Motors the fitment was great, paint was perfect. If it wasn't for the fact that I backed into a prybar my wife left in the middle of my garage I wouldn't be replacing it. Probably order another from them.
