Would you buy an M3 without a Sunroof

TexasSpartan · 04-22-2014, 09:41 AM

Every car I've owned (except for my 1996 Impala SS) has been with a sunroof, including my current M3. Driving down the highway at 70-80 mph with the windows down is just too loud for me and I love having the air flow through the cabin.

1MOREMOD · 04-22-2014, 01:51 PM

heres mine.

MrPrena · 04-22-2014, 02:08 PM

On a Hot 90F+ days on a track. Track temperature would be higher for sure.
I am sure no one will turn on their AC on a circuit.

My questions to Aerospace guys are:

Which car will go faster at a same mass, same driver, same temp, same pressure tires:

1. One with CF roof with 1/4 side window down?
2. One with Sunroof with no side window down, but pop the sunroof up?

HPF_E92 · 04-22-2014, 02:20 PM

I used the sunroof button more often than the M button but that's just me. Amazing option to vent out your car on hwy and I always photoshoot my car with my sunroof tilted. I think it makes the car more aggressive in a way.

Beemdog · 04-22-2014, 03:04 PM

Quote:

Originally Posted by 1MOREMOD

heres mine.

So where do they hide the electric motor? Ever weigh that thing???

Darth Federer · 04-22-2014, 03:10 PM

Quote:

Originally Posted by 1MOREMOD

heres mine.

Damn. Looking a this picture I'm surprised the weight difference isn't greater. I do love my sunroof though.

1MOREMOD · 04-22-2014, 03:49 PM

Quote:

Originally Posted by Beemdog

So where do they hide the electric motor? Ever weigh that thing???

The electric motor mounts on the leading edge just aft of the rearview mirror, under the controls for lights and the roof. It actually weighs less than I thought. Total for the whole cassette and motor is 34 lbs but this is from an e46.

1MOREMOD · 04-22-2014, 03:50 PM

Quote:

Originally Posted by Darth Federer

Damn. Looking a this picture I'm surprised the weight difference isn't greater. I do love my sunroof though.

Weight comes off more gradually than you would think. Really tough to get super low weight with these cars.

GVIFlyer · 04-22-2014, 04:14 PM

Quote:

Originally Posted by MrPrena

On a Hot 90F+ days on a track. Track temperature would be higher for sure.
I am sure no one will turn on their AC on a circuit.

My questions to Aerospace guys are:

Which car will go faster at a same mass, same driver, same temp, same pressure tires:

1. One with CF roof with 1/4 side window down?
2. One with Sunroof with no side window down, but pop the sunroof up?

In order to answer your question CD would have to be known for both configurations assuming that all other considerations were the same...but they're not. F= MA is probably governing and M is greater for the sunroof car.

s85e90 · 04-22-2014, 05:33 PM

Quote:

Originally Posted by 1MOREMOD

The electric motor mounts on the leading edge just aft of the rearview mirror, under the controls for lights and the roof. It actually weighs less than I thought. Total for the whole cassette and motor is 34 lbs but this is from an e46.

That will sell quick to an e46 guy as the sunroof casettes are notorious for breaking.

1MOREMOD · 04-22-2014, 06:21 PM

Quote:

Originally Posted by s85e90

That will sell quick to an e46 guy as the sunroof casettes are notorious for breaking.

Good to know, wasn't aware there was a demand, I pretty much have an entire interior to unload.

s85e90 · 04-22-2014, 09:46 PM

Quote:

Originally Posted by 1MOREMOD

Good to know, wasn't aware there was a demand, I pretty much have an entire interior to unload.

yeah if it's a black interior that may be popular as well, but def the sunroof assembly as I said before; they are notorious for breaking when used.

Richbot · 04-24-2014, 09:37 AM

Quote:

Originally Posted by 1MOREMOD

heres mine.

Derp never mind I see where you weighed it now

M3-S65 · 04-24-2014, 02:23 PM

I have a sunroof and the color silverstone....I think silverstone is the slowest right? I do have some decals on my car that may make up for it...

smmmurf · 04-24-2014, 02:29 PM

Quote:

Originally Posted by MysticBlue

Would you buy an M3 without a Sunroof ?

I wouldn't buy an M3 with a sunroof. Sunroof is useless, adds weight in the worst possible place, more shit to break, makes car noiseier, interior gets dirtier, less headroom. You couldn't pay me to have a sunroof put on any vehicle I own.

+1

You could pay me but it would have to be AT LEAST as much as it would cost to have a high quality body shop replace the roof panel with a non sunroof panel, and in reality, I'd probably want triple that amount for the resale hit and the trouble

GVIFlyer · 05-01-2014, 12:24 AM

Quote:

Originally Posted by Petros

That's all fine and dandy. Now care to show us actual experimental evidence of the benefit of a CF roof in terms of real life performance, as opposed to a hypothetical benefit on a computer simulator or a piece of paper with mathematical equations? And really, do you even go to the track? I do on a regular basis. But hey, I'm sure you will smoke me since I have that heavy sunroof on top.

And of course your car is also stripped out with DCT, ZCP, and cloth seats with no options since that's the ultimate track weapon

That's one of the things that reaffirms me about being an engineering test pilot; I can predict everything that's going to happen in the air before I ever leave the runway. It works for ground bound vehicles as well.

Quote:

Originally Posted by Petros

I don't have a wife. Happily single. Unless you want to lend me yours.

Perfectly understandable, if your real life persona is anything like your online personality, it is a perfect means of birth control.

Regarding your a-hole comment: trust me, she would be severely disappointed.

Quote:

Originally Posted by M3-S65

Ha ha....don't even argue with that guy. He believes everything that BMW "sells" him. Like the carbon fiber roof makes the car faster.....lol Yea, and an intake adds 50 HP right?
For example he also believes that bearing problems don't exist because his blah blah dealership says they don't....

...

You guys apparently really enjoy giving each other online hand jobs, perhaps you should meet up to seal the deal.

MrPrena · 05-01-2014, 02:09 AM

Quote:

Originally Posted by M3-S65

I have a sunroof and the color silverstone....I think silverstone is the slowest right? I do have some decals on my car that may make up for it...

LOL.
It would be funny to see all these analytical chemist from Sherwin-Williams, Valspar, ppg, BASF guys sitting down, spending 100 man hour per scientist to figure out which paint would have lowest density. That will probably save 1lbs per car based on most to less dense paint color?

I would rather put 1/4 gallons less of octane.

M3-S65 · 05-01-2014, 07:38 AM

Quote:

Originally Posted by GVFlyer

That's one of the things that reaffirms me about being an engineering test pilot; I can predict everything that's going to happen in the air before I ever leave the runway. It works for ground bound vehicles as well.

Perfectly understandable, if your real life persona is anything like your online personality, it is a perfect means of birth control.

Regarding your a-hole comment: trust me, she would be severely disappointed.

You guys apparently really enjoy giving each other online hand jobs, perhaps you should meet up to seal the deal.

....

Petros · 05-01-2014, 08:23 AM

Quote:

Originally Posted by GVFlyer

That's one of the things that reaffirms me about being an engineering test pilot; I can predict everything that's going to happen in the air before I ever leave the runway. It works for ground bound vehicles as well.

Great! Now go race in Formula 1. You should be able to win since you can "predict" everything about the car's handling even before you leave pitlane

Quote:

Perfectly understandable, if your real life persona is anything like your online personality, it is a perfect means of birth control.

No it's actually because every girl I date asks to see my Harvard degree but sadly I don't have one to show. Can I borrow yours?

MrPrena · 05-01-2014, 04:06 PM

Quote:

Originally Posted by Petros

Great! Now go race in Formula 1. You should be able to win since you can "predict" everything about the car's handling even before you leave pitlane

No it's actually because every girl I date asks to see my Harvard degree but sadly I don't have one to show. Can I borrow yours?

If Richards at TopGear stalls more than 3 times with F1 Renault, I am sure Dr. HBS OR even a chancellor of Harvard won't even be able to activate the hydraulic with throttle.

start from 5;00

M3-S65 · 05-01-2014, 06:48 PM

Quote:

Originally Posted by Petros

No it's actually because every girl I date asks to see my Harvard degree but sadly I don't have one to show. Can I borrow yours?

You can borrow mine...girls love it...

MrPrena · 05-01-2014, 07:39 PM

This diploma joke doesn't get old. Still funny.

Quote:

Originally Posted by M3-S65

You can borrow mine...girls love it...

04-22-2014, 09:41 AM	#177
TexasSpartan Lieutenant 24 Rep 422 Posts Drives: '06 E85 3.0si Join Date: Feb 2013 Location: Fulshear, TX iTrader: (0)	Every car I've owned (except for my 1996 Impala SS) has been with a sunroof, including my current M3. Driving down the highway at 70-80 mph with the windows down is just too loud for me and I love having the air flow through the cabin. __________________ 2006 E85 Z4 3.0si 2015 F10 535i M Sport Sold 2011 E92 M3 Sold 2007 E90 335i Sold 2006 E90 330i Sold
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04-22-2014, 01:51 PM	#178
1MOREMOD - 11817 Rep 23,187 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	heres mine. Attached Images __________________ 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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04-22-2014, 02:08 PM	#179
MrPrena Captain 1588 Rep 803 Posts Drives: BMW Hyundai Nissan Join Date: Jan 2014 Location: TB iTrader: (0)	On a Hot 90F+ days on a track. Track temperature would be higher for sure. I am sure no one will turn on their AC on a circuit. My questions to Aerospace guys are: Which car will go faster at a same mass, same driver, same temp, same pressure tires: 1. One with CF roof with 1/4 side window down? 2. One with Sunroof with no side window down, but pop the sunroof up?
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04-22-2014, 02:20 PM	#180
HPF_E92 Private First Class 11 Rep 176 Posts Drives: E92 Join Date: Aug 2010 Location: GTA iTrader: (2)	I used the sunroof button more often than the M button but that's just me. Amazing option to vent out your car on hwy and I always photoshoot my car with my sunroof tilted. I think it makes the car more aggressive in a way. __________________ E90 M3 6MT - Exhaust / Pulley / BPM Tuned (SOLD) Audi RS5
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04-24-2014, 02:23 PM	#190
M3-S65 Banned 41 Rep 881 Posts Drives: M3 Join Date: Dec 2013 Location: USA iTrader: (6)	I have a sunroof and the color silverstone....I think silverstone is the slowest right? I do have some decals on my car that may make up for it...
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