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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F34 3-Series GT (Gran Turismo) Forum > BMW 3 Series GT Trunkline Revealed and More Looks at Retractable Spoiler
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      03-20-2012, 08:21 PM   #23
transmoo
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Remind me audi quttro
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      03-20-2012, 08:47 PM   #24
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sweet spoiler
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      03-20-2012, 10:11 PM   #25
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Hmm I wonder If will get more love then the GT.
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      03-21-2012, 12:02 AM   #26
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Burn It With Fire!

F31 >>>>>>> WTFEVER F3X that will be called...
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      03-21-2012, 12:19 AM   #27
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Quote:
Originally Posted by Imola.ZHP View Post

F31 >>>>>>> WTFEVER F3X that will be called...
Well, US buyers will have a choice since both the F31 touring and F34 GT will be available.
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      03-21-2012, 01:42 AM   #28
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Wink

Quote:
Originally Posted by ///Matthew View Post
Level of want: -infinity


Quote:
Originally Posted by bimmerjph View Post
Hey I'll take that 2 foot shorter braking distance if it means I avoid hitting something.
For Info:

Spoiler such as this one does not have airbrake functionality...

For a spoiler to have airbrake functionality, you would have to add mechanism and electronics to control/command the spoiler to a vertical position for adding drag!

And even if it does have airbrake functionality (which it does not have)
Airbrakes is only effective during high speed...

At low speed, you are breaking wind ...

next time you are out driving, put your hands out and try to hold the air flow at 20 mph or even 45 mph....

the best you can do in shortening the braking distance is in the order of partial inches... or millimeters...


Quote:
Originally Posted by gmilori View Post
Saw one of these prototypes today around 2:30pm on State St here in Santa Barbara.

Looked pretty tall.
if it means less people in F30, i am all for it...

Quote:
Originally Posted by Taipei-TT View Post
These types of spoilers work by interrupting the flow of air along the top of the back window that would then flow downwards in a vortex towards the back/underside of the car which would create an uplift under the back wheels. By deflecting the air upwards, the downward vortex will not interact with the back of the car, thus it will not cause uplift, thus the backend of the car will be firmly planted at highway speeds.

It's not a 'wing' that generates low pressure on the lower side as its main purpose. (e.g. the inverse of what airplane wings do) That is why it's probably more correct to call it a spoiler...it spoils the uplifting affects of the high speed air coming down the back window that would create low pressure under the car.

If I'm not mistaken....!
You've done well reciting your Engineering / Aerodynamics text book

but the last paragraph should say:
"It's a 'wing' that generates low pressure on the lower side as its main purpose." [...] ".... create high pressure over the spoiler and rear end of the car."


Last edited by DrivenByE30; 03-21-2012 at 04:10 PM.
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      03-21-2012, 06:28 AM   #29
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Originally Posted by shanecarmaster1 View Post
I'm a little nervous about all this... One thing is - if you wanted this car, why not buy a sedan?
or why not buy a wagon?
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      03-21-2012, 08:32 AM   #30
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Has BMW still not learned a damn thing? The 5GT was a horrible looking car and terrible business move. They think a similar shaped 3 series will do that much better? WTF!!?

Just don't screw up the M3...
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      03-21-2012, 08:34 AM   #31
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Quote:
Originally Posted by transmoo View Post
Remind me audi quttro
Man don't even put the quattro down like that. It was/is a great looking car. These new BMW wagons/hatchbacks/bubblebutt cars are

But..I do see your point
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      03-21-2012, 10:54 AM   #32
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Quote:
Originally Posted by Taipei-TT View Post
These types of spoilers work by interrupting the flow of air along the top of the back window that would then flow downwards in a vortex towards the back/underside of the car which would create an uplift under the back wheels. By deflecting the air upwards, the downward vortex will not interact with the back of the car, thus it will not cause uplift, thus the backend of the car will be firmly planted at highway speeds.

It's not a 'wing' that generates low pressure on the lower side as its main purpose. (e.g. the inverse of what airplane wings do) That is why it's probably more correct to call it a spoiler...it spoils the uplifting affects of the high speed air coming down the back window that would create low pressure under the car.

If I'm not mistaken....!
very well put!
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      03-21-2012, 12:52 PM   #33
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Quote:
Originally Posted by bimmerjph View Post
I take it it will be an air brake too right?
HA HA HA!
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      03-21-2012, 12:55 PM   #34
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Quote:
Originally Posted by Imola.ZHP View Post
Burn It With Fire!

F31 >>>>>>> WTFEVER F3X that will be called...
BINGO... marketing knows something we dont... can't be a US market item..
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      03-21-2012, 12:58 PM   #35
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It certainly has potential, but I want to see more F31 pics and info. That's the one I'm after...
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      03-21-2012, 01:24 PM   #36
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Dear BMW: Stop doing the badly named GT versions at all. Thanks, Everyone.
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      03-22-2012, 06:52 AM   #37
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I think X1 is much better.....
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      03-22-2012, 12:56 PM   #38
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BMW, why bother with these GT wastes of time?!

So ugly.
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      04-14-2012, 04:57 PM   #39
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all of the people calling this car ugly must have xray vision. all i can see is the basic hood and roof line which looks a lot more lithe than the 5 series gt. a well done hatch offers a very interesting alternative to a sedan and wagon. let's just hope it doesn't end up looking as heavy as the 5 gt does.
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      04-28-2012, 04:22 PM   #40
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Looks great on TT Rs but 3 GT would have to refer judgement on that one
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