Advice on installing BMW CF Splitters?

[NotEnoughTime]

I searched unsuccessfully to find DIY info on mounting CF splitters. The dealer recommended a glue/tape/fastener combo, but I'd prefer 3M tape on the upper surface & just the included fasteners on the lower side in case they ever need replacing or removal. Any links or shared experiences will be appreciated.

[rye m3]

I used the tape on the top and fastners on the bottom. Very secure and took half an hour to install.

[kscarrol]

Had my dealer install mine, tape and fasteners only. Cost was one hour labor or $80 plus tax. Enjoyed 45 minutes checking out cars on the lot and was on my way. Better than me screwing it up!

[Chowster]

I did it myself with 3M tape all around the perimeter, and ONE screw - I didn't want to drill any additional holes. Took me about 90 minutes (I'm a total novice), but most of that time was cutting the tape perfectly, and peeling off the stubborn red backing!

Try them on a couple times first before peeling off the backing to give yourself some practice on how best to slide them on without the tape prematurely sticking. I didn't use any adhesive preparation (i.e. rubbing alcohol) - just washed and dried the painted surface nicely first. I also didn't use painters tape to hold them on afterwards. Just some firm pressure for a few minutes and let it sit overnight in the garage.

Mine are holding nicely. I think Betalink is overkill on the splitters, considering their minimalistic design. Good luck!

[NotEnoughTime]

Originally Posted by rye m3

I used the tape on the top and fastners on the bottom. Very secure and took half an hour to install.

Originally Posted by Chowster

I did it myself with 3M tape all around the perimeter, and ONE screw - I didn't want to drill any additional holes.

Thanks to all for the responses. Questions to rye and Chowster:
1. What width tape did you use? The dealer gave me a small roll of 1/2" 3M tape...basically the kit they use for the rear deck spoiler. Is 1/2" enough on the top surface?
2. Is there only one pre-drilled hole on the lower side...haven't gotton under to check for myself yet. rye: if you drilled new holes, what size bit did you use?

Thanks again and "never forget"
JW

[jms_w]

I found this official BMW guide on CF installs. Can't remember the link. It covers more than just the splitters. Hopefully it can answer all your questions.

[Chowster]

Originally Posted by NotEnoughTime

Thanks to all for the responses. Questions to rye and Chowster:
1. What width tape did you use? The dealer gave me a small roll of 1/2" 3M tape...basically the kit they use for the rear deck spoiler. Is 1/2" enough on the top surface?
2. Is there only one pre-drilled hole on the lower side...haven't gotton under to check for myself yet. rye: if you drilled new holes, what size bit did you use?

Thanks again and "never forget"
JW

I used both 1/2" and 7/8" 3M tape (a 15' roll and 5' roll, respectively). Probably used about 1/2 a roll of each? If you just have the 1/2" roll, just use two strips on the top surface.

IIRC, There are 3 holes on the bottom side of the splitter. Only one hole closest to the wheel actually lines up directly with a screw. One other requires drilling, one other requires some super long screw. (I MIGHT BE WRONG) Mine wasn't going anywhere after a full perimeter of tape.