Are Coupe and convertible trunk spoilers the same? - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

WPG D33Z · 03-12-2012, 03:13 PM

I've been looking for a trunk spoiler to put on my vert and I see some that say coupe only? The trunks look the same and it doesn't move when the roof goes down. Is there really a difference or will I be good to go with a CF JB Speed?

Xios135 · 03-12-2012, 07:06 PM

There is a slight difference in trunks. I got an iCarbon spoiler last year which was made for coupes and it fits my vert fine. I can't speak for any other brands though.

roundel335 · 03-13-2012, 09:20 AM

A friend of mine had a small lip spoiler that he removed from the trunk of his 08 135i coupe, and when we tried it on my 11 128i convertible, the trunk edge had a different shape and the spoiler didn't match.

WPG D33Z · 03-13-2012, 10:39 AM

I might have one for sale in a couple weeks then :s I found one on ebay that said it fits the convertible. Fingers crossed!

fancyfl1ght · 03-13-2012, 10:44 AM

with the top down, the vert is aerodynamically unstable to justify a spoiler, unless your doing it for just looks. . . .

pinmagic · 03-13-2012, 10:55 AM

Quote:

Originally Posted by WPG D33Z

I might have one for sale in a couple weeks then :s I found one on ebay that said it fits the convertible. Fingers crossed!

Be careful there - I just wrote to 2 ebay sellers who listed spoilers as compatible with both the coupe and convertible, and asked them each to specifically confirm compatibility with the vert. One wrote back to say that it wasn't compatible (even tho their listing clearly says E82 & E88). The other was clearly a customer service agent of limited English skills who simply said "we only list items compatible with the car" (or somesuch).

If you find something that works, let us know.

pinmagic · 03-13-2012, 10:56 AM

Quote:

Originally Posted by fancyfl1ght

with the top down, the vert is aerodynamically unstable to justify a spoiler, unless your doing it for just looks. . . .

And with the top up....?

mdputnam · 03-13-2012, 11:04 AM

Quote:

Originally Posted by fancyfl1ght

with the top down, the vert is aerodynamically unstable to justify a spoiler, unless your doing it for just looks. . . .

Coupe or Vert the tiny little CF spoiler is mostly for show, to my knowledge no one has demonstrated and BMW hasn't claimed anything more.

PS I'd love to see data to the contrary! I wouldn't be surprised if BMW tested it in their wind tunnel at some point. Usually to be effective you need to get the spoiler out of the air flow boundary layer, that's the idea of pop up spoilers found on many Porsches

03-12-2012, 03:13 PM	#1
WPG D33Z Second Lieutenant Drives: 2008 135i vert Cobb Stage2 Join Date: Mar 2012 Location: Winnipeg, Canada Posts: 255 iTrader: (0)	Are Coupe and convertible trunk spoilers the same? I've been looking for a trunk spoiler to put on my vert and I see some that say coupe only? The trunks look the same and it doesn't move when the roof goes down. Is there really a difference or will I be good to go with a CF JB Speed? __________________ 2008 SGM 135i Cobb Stage 2 FBO 2008 TS X3 MSport KW V2
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03-12-2012, 07:06 PM	#2
Xios135 Vert Nerd Drives: 2010 135i Vert Join Date: Jan 2011 Location: Philadelphia Posts: 321 iTrader: (0) Garage List 2010 BMW 135i Conve ... [0.50]	There is a slight difference in trunks. I got an iCarbon spoiler last year which was made for coupes and it fits my vert fine. I can't speak for any other brands though. __________________ *135i Vert-Montego Blue M-Sport-6MT, BMS DCI, JB+, CF iCarbon Spoiler, Matte black grills, stock diffuser mod, Ink Black powder coated 264s,*

03-13-2012, 09:20 AM	#3
roundel335 Colonel Drives: 13 335i Sedan, 11 128i Cabrio Join Date: Apr 2010 Location: Boerne, TX Posts: 2,734 iTrader: (2) Garage List 2013 BMW 335i Sedan [5.00] 2011 BMW 128i Cabri ... [4.25]	A friend of mine had a small lip spoiler that he removed from the trunk of his 08 135i coupe, and when we tried it on my 11 128i convertible, the trunk edge had a different shape and the spoiler didn't match. __________________ 2013 F30 335i M-Sport 8AT/MPE/MPPK, 2011 128i M-sport Cabrio 6MT/PE

03-13-2012, 10:44 AM	#5
fancyfl1ght First Lieutenant Drives: 2011 Black 135i Convertible Join Date: Aug 2010 Location: San Diego, CA Posts: 307 iTrader: (1)	with the top down, the vert is aerodynamically unstable to justify a spoiler, unless your doing it for just looks. . . . __________________ Jet Black 2011 BMW 135i DCT M Sport Convertible. Loaded sans Comfort Access & Park Distance Contol. LUX Angel Eyes (Best Ever). APEX ARC-8 Anthracite Wheels Staggered 18X8.5 ET 45/18X9.5 ET 63 Michelin PS2 235 40 18/265 35 18.

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03-13-2012, 10:39 AM	#4
WPG D33Z Second Lieutenant Drives: 2008 135i vert Cobb Stage2 Join Date: Mar 2012 Location: Winnipeg, Canada Posts: 255 iTrader: (0)	I might have one for sale in a couple weeks then :s I found one on ebay that said it fits the convertible. Fingers crossed!