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      09-15-2019, 08:39 PM   #1
thatBimmerBloke
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Trunk Spoiler Install Help (M Perf CF)

I'm trying to install M Perf CF trunk spoiler on my F32 and after I applied the 3M tape and tried to align it on the trunk I could see the tape on the edges, on the top front side(towards the rear window) was barely touching the trunk, even when I pressed it hard, do I need to double up the tape on the edges? On the rear side and all other parts, the single layer of tape does stick out enough to touch the trunk. :
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      09-16-2019, 03:40 AM   #2
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No, you shouldn't need double layers of tape for it to fit properly. I installed the OEM CF rear spoiler on my 435 & it fit perfectly. Only used the one layer of tape that was supplied...

Did the install on a very hot day + used 3M adhesive promoter. Didn't really need the promoter, typically always do it for xtra measure - spoiler fit like a glove.

I did use some of the plastic variety hand clamps on the tips just to make sure it adhered well in those areas
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      09-16-2019, 11:25 AM   #3
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Quote:
Originally Posted by 1QuikWS6 View Post
No, you shouldn't need double layers of tape for it to fit properly. I installed the OEM CF rear spoiler on my 435 & it fit perfectly. Only used the one layer of tape that was supplied...

Did the install on a very hot day + used 3M adhesive promoter. Didn't really need the promoter, typically always do it for xtra measure - spoiler fit like a glove.

I did use some of the plastic variety hand clamps on the tips just to make sure it adhered well in those areas
BMW includes the tape with it, maybe it is of the right thickness? I bought a used spoiler and got the 3M tape from autozone, however on the front edges the tape just sinks and there isn't enough bulge for it to touch the trunk.
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      09-16-2019, 12:28 PM   #4
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Ah, yes I know exactly what you are talking about. The tape you got must be thinner than the tape supplied by BWW
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      09-16-2019, 12:30 PM   #5
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Quote:
Originally Posted by 1QuikWS6 View Post
Ah, yes I know exactly what you are talking about. The tape you got must be thinner than the tape supplied by BWW
Should I be able to get the same tape from the dealer? Or someplace else? I see 3M recommends 06394 version which is 2.2mm thick.

Last edited by thatBimmerBloke; 09-16-2019 at 10:20 PM..
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      09-16-2019, 05:32 PM   #6
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Get 3m VHB on Amazon.
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      09-16-2019, 10:19 PM   #7
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Quote:
Originally Posted by ProjectBoost View Post
Get 3m VHB on Amazon.
Are you using the same? 3m recommends this 06394 tape for spoilers which is 2.2mm thick as compared to 1.2mm of normal VHB, it also costs around $29 from ebay
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      09-19-2019, 11:52 PM   #8
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Ended up buying 3M 06397, $30 from Amazon, 3M mentions on their website it's used for spoilers, got the promoter too, the front side of spoiler has some grainy film which might benefit from the promoter. The tape is 1.54mm thick, as opposed to 1.1mm of normal 3M VHB that sells for around $10. Will install this weekend.
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      09-20-2019, 09:37 AM   #9
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Ended up buying 3M 06397
Yep, you should be good to go.
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      09-21-2019, 11:16 AM   #10
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Now that you've got the tape sorted, for install line it up exactly where you want it. Using painters tape attach one side of the spoiler to the trunk, literally just use a bunch of it on top of the spoiler to fix it in place. There's enough flex in the spoiler that you can lift up the other side and start peeling the permanent tape backing. Once that side is down, remove the masking tape and pull the backing paper off, sticking the second side down.
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      09-22-2019, 07:44 PM   #11
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Quote:
Originally Posted by BEM-S4 View Post
Now that you've got the tape sorted, for install line it up exactly where you want it. Using painters tape attach one side of the spoiler to the trunk, literally just use a bunch of it on top of the spoiler to fix it in place. There's enough flex in the spoiler that you can lift up the other side and start peeling the permanent tape backing. Once that side is down, remove the masking tape and pull the backing paper off, sticking the second side down.
It has been raining I did put the tape on the spoiler for now, also used the promoter. I didn't get the last part, once I put down the back end after removing the tape backing how will I be able to remove the backing from beneath the top fron end of the spoiler? My plan was to remove backing on both sides at once and then put it down after I aligned it using masking tape.
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