Any road tests on e92 w/ sunroof?

Totti · 08-31-2011, 09:57 PM

Quote:

Originally Posted by jeff4598

Concept is Wt1X height1= wt2X ht 2 so 45lbs at 50 inches ht has ~ impact of wt of car at .65 ht difference Thought more and realized it's really the ht above the axle but that probably makes it = to 1/2 inch drop.

So i just drop my car by 1/2 inch and then tell the moon roof haters to STFU?

ff topic:

Taking that further, I have ZCP. So how far behind the civic M3 am i?

1MOREMOD · 08-31-2011, 10:04 PM

I'm 195-200 but it aint fat. Unfortunatly in this case it don't matter weight is weight

captainaudio · 08-31-2011, 10:17 PM

Quote:

Originally Posted by gthal

People who buy a sunroof will defend it by saying the benefits of the CF roof are meaningless. People who go CF will say it makes a difference. IMO, I believe it would make a difference for many of the reasons you note (i.e. weight at the highest point possible) but I'm not convinced I would "feel" the difference. Would there be a measureable difference at the track if the same pro driver tried both? My guess is yes but it would be slight. I like it because it's unique and because I like the idea of the placebo effect and have convinced myself that I'm faster because of it

If you are looking to get around a track fast 18s vs 19s will gain you more than a CF roof.

CA

ZenGuy · 08-31-2011, 10:30 PM

Thanks for the insight guys. Main reason I'm asking is because I was originally going to order a 2012 with comp pkg, but I found a fully loaded 2010 at a great price but it has a sunroof. I just want to figure out how much performance I'd be losing with the 2010 with sunroof versus a 2012 w/ comp pkg and CF roof.

gblansten · 08-31-2011, 10:31 PM

Quote:

Originally Posted by captainaudio

If you are looking to get around a track fast 18s vs 19s will gain you more than a CF roof.

CA

That's a great point. I knew damn well when I opted for the 19" wheels (220M) that I was NOT enhancing the speed of my car. 18s definitely have an advantage.

http://www.caranddriver.com/features...sted-tech_dept

Legion5 · 08-31-2011, 10:38 PM

This guy has posted multiple threads about how the CF roof compares to the car with the sunroof. I'm pretty sure he's crazy.

Seriously. I've been part of design teams for production cars and worked with center of gravity, and weight specifically. The difference is so small, you would never notice any difference, even if you were a pro driver.

ZenGuy · 08-31-2011, 11:48 PM

Quote:

Originally Posted by Legion5

This guy has posted multiple threads about how the CF roof compares to the car with the sunroof. I'm pretty sure he's crazy.

Seriously. I've been part of design teams for production cars and worked with center of gravity, and weight specifically. The difference is so small, you would never notice any difference, even if you were a pro driver.

Oh, I won't deny that I'm crazy. I'm extremely OCD when it comes to cars and I'm just trying to make the most informed decision that I can for this purchase. I was all set to pull the trigger on the car until I started reading posts / threads from people stating that going with the sunroof would cause degraded performance.

z335is · 09-01-2011, 10:08 AM

Bottom line is you have to get what you want in the end. Also fwiw, I think R

OC3 · 09-01-2011, 05:25 PM

0.0001 sec difference in 0-60

gthal · 09-01-2011, 06:29 PM

Quote:

Originally Posted by OC3

0.0001 sec difference in 0-60

I think I could feel that!

OC3 · 09-02-2011, 01:02 AM

Quote:

Originally Posted by gthal

I think I could feel that!

ZenGuy · 09-02-2011, 11:29 PM

Quote:

Originally Posted by OC3

0.0001 sec difference in 0-60

So you're telling me there IS a difference then, lol. I'm 70/30 on getting the 2010, I might end up waiting forever looking for a 2011 to come down the pipeline spec'd the way I want.

08-31-2011, 10:04 PM	#24
1MOREMOD - 11817 Rep 23,187 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	I'm 195-200 but it aint fat. Unfortunatly in this case it don't matter weight is weight __________________ 02 Tiag e46 M3\|6MT\|GC plates\|MCS c.o.\|GC bars\|GC race control arms\|GC bushings\|BW eng. & tran. mounts\|subframe kit\|BW race shifter\|BW Jaffster\|Euro header\|BW exhaust\|K&N c.a.i.\|Epic race tune\|Rouge pulleys\|Seibon CF hood\|CSL bumper\|apr gt 250 & splitter\|ST-40\|XR-2\|SS lines\|half cage\|Recaro profi\|Profi 2 harness\|BMWpedals\|BW studs\|
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08-31-2011, 10:30 PM	#26
ZenGuy New Member 5 Rep 19 Posts Drives: 2011 335is Join Date: Aug 2011 Location: FL iTrader: (0)	Thanks for the insight guys. Main reason I'm asking is because I was originally going to order a 2012 with comp pkg, but I found a fully loaded 2010 at a great price but it has a sunroof. I just want to figure out how much performance I'd be losing with the 2010 with sunroof versus a 2012 w/ comp pkg and CF roof.
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08-31-2011, 10:38 PM	#28
Legion5 Major 175 Rep 1,379 Posts Drives: e92 Join Date: Dec 2007 Location: USA iTrader: (12)	This guy has posted multiple threads about how the CF roof compares to the car with the sunroof. I'm pretty sure he's crazy. Seriously. I've been part of design teams for production cars and worked with center of gravity, and weight specifically. The difference is so small, you would never notice any difference, even if you were a pro driver. __________________ Clean cars are happy cars! CANON PHOTOGRAPHER
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09-01-2011, 10:08 AM	#30
z335is Lieutenant 356 Rep 501 Posts Drives: 2016 M3 Join Date: Apr 2011 Location: Newark iTrader: (0)	Bottom line is you have to get what you want in the end. Also fwiw, I think R
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09-01-2011, 05:25 PM	#31
OC3 Havin' a blast! 125 Rep 4,847 Posts Drives: 2013 M3 E92 Jerez Blk DCT ZCP Join Date: Nov 2010 Location: SoCal iTrader: (1)	0.0001 sec difference in 0-60 __________________ BRP 1:56 \| CVR 2:01 \| ACS 1:53 \| WSIR 1:34
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