Carbon Fiber rear diffuser fitment

MpJaj · 07-22-2017, 08:10 PM

I have a Vorsteiner Style CF rear diffuser that im trying to adjust to fit better. Basically if i push it up with my hand it fits perfectly but when i let go its natural position leaves a small gap. show in the picture (link below)

https://photos.app.goo.gl/YwTA7iYuwNyP2RUG3

Anybody know what the best way to go about fixing this would be? I tried double sided tape but it didn't work very well.

Thanks!

lsturbointeg · 07-23-2017, 07:34 PM

is this aftermarket? if they are than the tabs you could probably add screws from the inside to hold them in place. what you would have to do is remove the rear bumper to do this. when you push up on the diffuser look on the other side where the tab pulls through and when you have it pushed in you'll take a drill and drill a hold through that tab. than insert a screw and it should hold the diffuser in place. it's what i had to do on mine

BuiltnBoostedZ · 11-08-2017, 05:54 PM

I had the same problem with my carbon rear diffuser. I removed...plasti dipped the gap and it looks good now. If you aren't happy with that, you can use weather stripping. If done right, the plasti dip looks good.

Johngm45 · 12-03-2017, 10:58 AM

I am having the same problem. I tried two sided industrial tape to see if it holds up.
The fitment issue was on driver side only just as your picture shows.

07-22-2017, 08:10 PM	#1
MpJaj Private First Class 20 Rep 106 Posts Drives: F10 550i M Join Date: Aug 2016 Location: Portland, OR iTrader: (0)	Carbon Fiber rear diffuser fitment I have a Vorsteiner Style CF rear diffuser that im trying to adjust to fit better. Basically if i push it up with my hand it fits perfectly but when i let go its natural position leaves a small gap. show in the picture (link below) https://photos.app.goo.gl/YwTA7iYuwNyP2RUG3 Anybody know what the best way to go about fixing this would be? I tried double sided tape but it didn't work very well. Thanks!
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07-23-2017, 07:34 PM	#2
lsturbointeg Lieutenant General 9153 Rep 14,522 Posts Drives: 2011 535i Jet Black Join Date: Aug 2014 Location: Asian lost in OH iTrader: (0)	is this aftermarket? if they are than the tabs you could probably add screws from the inside to hold them in place. what you would have to do is remove the rear bumper to do this. when you push up on the diffuser look on the other side where the tab pulls through and when you have it pushed in you'll take a drill and drill a hold through that tab. than insert a screw and it should hold the diffuser in place. it's what i had to do on mine __________________ ~F90Conversion~21"3Piece Forged AvantGardeWheels~KWV1Coilovers~CQUENCE slotted/drilled rotors~GoodridgeStainlesslines~MeisterschaftQuadEx haust~Akrapovic 4"tips~VRSF DP~VRSF CP~TurboSmart BOV~K&N filter~CarbonFiberExteriorComponents~GladenAlphaCo mponents~MatchUp7BMW~Punch P300-12T~ Follow me on Instagram: lsturbointeg
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11-08-2017, 05:54 PM	#3
BuiltnBoostedZ Private First Class 145 Rep 122 Posts Drives: 2012 535ix Join Date: Oct 2017 Location: I'm here bc I'm not all there iTrader: (0)	I had the same problem with my carbon rear diffuser. I removed...plasti dipped the gap and it looks good now. If you aren't happy with that, you can use weather stripping. If done right, the plasti dip looks good. Attached Images
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12-03-2017, 10:58 AM	#4
Johngm45 Enlisted Member 8 Rep 31 Posts Drives: 535xi m sport Join Date: Nov 2017 Location: KY iTrader: (0)	I am having the same problem. I tried two sided industrial tape to see if it holds up. The fitment issue was on driver side only just as your picture shows.
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