CA-C300

Hey guys, I recently got a trunk and a roof spoiler for my C300, was wondering how you guys had it installed, the place I ordered from said its to be siliconed on? Has anyone done it that way? does it work well? Also, I'm looking to get a CF Front lip and CF mirror covers if you know of a place where i can get a good deal, please let me know. Thanks!

xXHotelCrazyXx

Use 3M Plastic double sided tape for the spoiler. Siliconed on? LMAO...

CA-C300

Thanks! haha, I was thinking that was a bit weird.

hitokiri89

Take a look at Jbspeed for the CF stuff .

Sportstick

Not silicone....urethane, and MB makes a product which can be used. My indy shop introduced me to the benefits of using urethane, and I wouldn't go without it now. There have been too many reports of people relying on tape, only to have the part loosen, and in some cases, fly off. Think about the potential outcome to the car behind you when that happens! A spoiler flying through the windshield at another person?

Adhesive can work, but adhesives are designed to specs for ambient temperatures, surface temperatures, surface preparation to remove any contaminants, pressure applied to the part and eveness across the area and duration of that pressure, etc. it is extremely unlikely that all of the variables can be properly controlled. And, even then, failures happen. As a prior OE employee, I recall how body side moldings would occasionally experience adhesive failures, even when applied properly, due to variations in the adhesive production.

An issue of urethane is that it is VERY secure. It can be removed later, if you wish, but it takes some work, and I would probably go back to a body/paint expert for that, but I don't ever intend to take off my roof or deck spoiler, both urethaned into place. Some folks here don't like the issue of the challenging removal, and somehow manage to rationalize the risk. I can't.

CA-C300

exactly what I was looking for. Thanks!

TheDarkSide

3M Double Sided RED Tape. Very sticky and has never come off. No need to urethane the thing to your car. Just have to prep it right. Use rubbing alcohol and whip clean the area its being placed.

CA-C300

Thanks alot!

Sincity

Agreed. C63_Guy had his Vorsteiner decklid spoiler mounted with tape only and he sees 160+ regularly. But...it also depends on how well the spoiler was made and how flat it lays against it's mating surface. If the spoiler is warped, no tape will hold it down over time.

johnlk25

I just had my dealership do it, that way if anything happens to it, its on them!!

Sportstick

Whether or not a spoiler harpoons an unsuspecting driver or passenger in the following car involves more than legal liability issues. I don't think some folks are taking this issue seriously enough. Another thread on this forum from a year ago or more had a couple of people who started out with tape, and had it fail. Success with tape seems reliable.....until it isn't, and it may not fail "gently".

Sincity

I agree with the liability factor. The double-sided tape also works reliably only if the undersurface of the spoiler is completely flat for the tape to lay on; like OEM. Also, other factors like angle affects it. Aftermarket spoilers made of FRP or CF tend not to be completely flat, meaning when you press the tape onto the underside of the spoiler, there will be peaks and valleys. Now attach the spoiler with these peaks and valleys and you will not have an optimal mating surface. Thus, it is recommended that you either silicone or urethane it on. Now, the Vorsteiner on C63_Guy's car was taped on (from what I believe) and the undersurface quality may be better, but I can't vouch for that. I prefer to stay safe.

CA-C300

Did you have an after market spoiler? If so, did you just go to the dealership and have them drill it?

johnlk25

Yes, I have an aftermarket roof and trunk spoiler. The dealership put both of them on, but it did not involve any drilling.

I did not trust myself to put these on because one wrong move and I can imagine that it would be hard to correct the alignment of these. Its not like you can put them on and take it back off if its not aligned correctly.

It took two technicians to put them on and a third technician eyeballing them to make absolutely sure that they were on correctly.

CA-C300

Cool Thanks!

sagar350z

Wow that is great news i guess ill make my dealer do the same. Thanks