Sunroof delete for N.America

inTgr8r · 07-27-2007, 11:21 AM

OK.... a little twist to the weight topic.

Since it's pretty much a lock that N.Amer will not be able to order a car w/o sunroof.

What about pulling out the sunroof & tin roof,
then installing a custom CF roof :biggrin:
(I've seen it done on an E46 M3)

What's your best guess for the weight that would be saved???

Chris Ruck · 07-27-2007, 11:39 AM

Is it possible that a sunroof in the 1 Series would be an option and or part of the premium package and not a standard equipment item to keep entry price low.

I was talking with my friend the other day about how awesome a carbon fiber roof will look on the new 1.

-Chris

chemhalo · 07-27-2007, 11:48 AM

How much weight does the sunroof add?
The sunroof adds about 40 pounds

http://m3.madrussian.net/faq.shtml#35

take it for what its worth!

Id say after installing the CF plug, youd be down a net of 30lbs. Thats pretty good considering its 30lbs from the TOP of the car.

inTgr8r · 07-27-2007, 11:50 AM

The look would be great.
I'm also interested in dropping some lb. from the top of the car.

inTgr8r · 07-27-2007, 11:53 AM

Quote:

Originally Posted by chemhalo

How much weight does the sunroof add?
The sunroof adds about 40 pounds

http://m3.madrussian.net/faq.shtml#35

take it for what its worth!

Id say after installing the CF plug, youd be down a net of 30lbs. Thats pretty good considering its 30lbs from the TOP of the car.

I'm not talking about a plug...
Rip the whole thing off & install a complete CF roof.
I'm guessing it'd be at least 50lb.

grant · 07-27-2007, 12:03 PM

Sunroof adds around 60 lbs and CF probably saves another 20 or so, so I think around 80 lbs would be saved and it would certainly lower the center of gravity for improved handling and headroom...

larryn · 07-27-2007, 12:27 PM

I'd consider that after my warranty was done with, depending on if I was making the car a dedicated track rat. Lightweight seats and tires and wheels would be lower in the car, but be way more cost effective.

IrvRobinson2 · 07-27-2007, 12:35 PM

Quote:

Originally Posted by inTgr8r

I'm not talking about a plug...
Rip the whole thing off & install a complete CF roof.
I'm guessing it'd be at least 50lb.

you guys are crazy

BForbes · 07-27-2007, 01:07 PM

^^Oh my god. Two words come to my mind.

Mahlzeit · 07-27-2007, 01:19 PM

Holy-overkill. While it looks neat, unless you're actually competitively racing, why bother? Actually, even the limitless budget pro racers don't build CF roofs onto their e90s.

I'll keep my sunroof and enjoy the the free tan. If you're so serious about performance,........ get coilovers and an LSD.

-Mahlzeit

Driv3r · 07-27-2007, 01:23 PM

the difference in weight wont matter as much as improving the driver in the hot seat...not offending anyone but thats what i go by...

Mahlzeit · 07-27-2007, 01:26 PM

BTW over the years I have accepted that many car-folks are into looks more than lap times, and I can respect that. To each their own,.... and I do admit I like looking at cars, and not just driving them. Cheers!

imported_tdc · 07-27-2007, 03:08 PM

Quote:

Originally Posted by Chris Ruck

Is it possible that a sunroof in the 1 Series would be an option and or part of the premium package and not a standard equipment item to keep entry price low.
-Chris

On the 135i, the moonroof is standard in the US market. I would say it's a safe bet it will be an option on the 128i.

inTgr8r · 07-27-2007, 03:13 PM

Quote:

Originally Posted by Driv3r

the difference in weight wont matter as much as improving the driver in the hot seat...not offending anyone but thats what i go by...

Been doing that for a number of years....
Just came back from this.....

ibeam81 · 07-27-2007, 03:19 PM

Quote:

Originally Posted by tdc

On the 135i, the moonroof is standard in the US market. I would say it's a safe bet it will be an option on the 128i.

That's my understanding as well. Unfortunately it has the 135i performance junkies up in arms. I'm okay with the sunroof, but maybe there will be a sunroof delete option for those more concerned with maximizing performance.

bats · 07-27-2007, 03:42 PM

If an "M1" is truly in the works, it should have a CF roof, along with other weight saving goodies.

Custom Fabricating, like above, was probably an insane amount of money. I think I remember reading that thread before, linked off bf.c

Yes, I will definitely give you props for undergoing such a project :thumbup: , but at what cost? :iono:

joearlo · 07-27-2007, 03:52 PM

Oh the possibilities!

I agree there is probably a better way to spend time/money - but us enthusiasts never have been known for our practicality have we?

Vornado · 07-27-2007, 04:01 PM

Not one of these threads again. Long live the sunroof!!! LOL.

j/k

but not really.

adc · 07-27-2007, 04:17 PM

It's certainly possible to do a CF roof swap. But I'll side with those who believe that swapping out the wheels/tires, exhaust, seats will net you at least 150lbs, perhaps more. Even though it's not at the top of the car, it's a more significant weight loss.

Add another 30-40lbs from front CF hood and rear CF trunk and perhaps another 30lbs from tossing the rear seats out the window - many possibilities, all for a lower budget than the CF roof. OH wait, titanium lug bolts are known to save some 5lbs or so...

I also wonder how well the CF roof swap is engineered and what it does for your rollover protection...

imported_tdc · 07-27-2007, 04:44 PM

CF roof conversions have been done on quite a number of E46 M3's. And although it is expensive, it isn't as astronomical as one would think.

As for the rollover protection, it's just as structurally sound as the regular roof as it's the a-pillars, b-pillars, and c-pillars that provide most of the strength in a rollover.

dieselchas · 07-27-2007, 05:52 PM

Quote:

Originally Posted by larryn

I'd consider that after my warranty was done with, depending on if I was making the car a dedicated track rat. Lightweight seats and tires and wheels would be lower in the car, but be way more cost effective.

I am with you on that seeing as how this will be my first new car and one with a warranty to boot. I will probably go for the conventional lightening mods. The CF sure does look neat though.

Plus someone will have the install down to a science by the time I get ready.

R32 · 07-27-2007, 11:33 PM

weight issues aside, i am a little worried about the headroom in the 1-series. in an e46, my helmet touches the roofliner with the seat all the way down, and i'm six feet even.

perhaps it could be an option if you take european delivery (fingers crossed).

07-27-2007, 11:21 AM	#1
inTgr8r Lieutenant General 2426 Rep 11,667 Posts Drives: M2 Comp Join Date: Mar 2006 Location: Toronto iTrader: (10)	Sunroof delete for N.America OK.... a little twist to the weight topic. Since it's pretty much a lock that N.Amer will not be able to order a car w/o sunroof. What about pulling out the sunroof & tin roof, then installing a custom CF roof :biggrin: (I've seen it done on an E46 M3) What's your best guess for the weight that would be saved??? __________________ '21 M2C Hockenheim Silver '18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold)
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07-27-2007, 11:39 AM	#2
Chris Ruck New Member 14 Rep 28 Posts Drives: Join Date: Jul 2007 iTrader: (0)	Is it possible that a sunroof in the 1 Series would be an option and or part of the premium package and not a standard equipment item to keep entry price low. I was talking with my friend the other day about how awesome a carbon fiber roof will look on the new 1. -Chris __________________ MY CAR... MYSPACE PAGE HERE... "DO THE RIGHT THING, IT WILL GRATIFY SOME PEOPLE AND ASTONISH THE REST!"
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07-27-2007, 11:50 AM	#4
inTgr8r Lieutenant General 2426 Rep 11,667 Posts Drives: M2 Comp Join Date: Mar 2006 Location: Toronto iTrader: (10)	The look would be great. I'm also interested in dropping some lb. from the top of the car. __________________ '21 M2C Hockenheim Silver '18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold)
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07-27-2007, 12:03 PM	#6
grant Lieutenant 17 Rep 524 Posts Drives: 1973 Porsche 911 Join Date: Jul 2007 Location: Denver, CO iTrader: (0)	Sunroof adds around 60 lbs and CF probably saves another 20 or so, so I think around 80 lbs would be saved and it would certainly lower the center of gravity for improved handling and headroom...
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07-27-2007, 12:27 PM	#7
larryn Lieutenant General 2146 Rep 10,176 Posts Drives: '97 332ti, '21 X5 45e, '16 GT4 Join Date: May 2005 Location: Seattle iTrader: (2)	I'd consider that after my warranty was done with, depending on if I was making the car a dedicated track rat. Lightweight seats and tires and wheels would be lower in the car, but be way more cost effective.
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07-27-2007, 11:48 AM	#3
chemhalo Private 2 Rep 98 Posts Drives: Join Date: Jul 2007 iTrader: (0)	How much weight does the sunroof add? The sunroof adds about 40 pounds http://m3.madrussian.net/faq.shtml#35 take it for what its worth! Id say after installing the CF plug, youd be down a net of 30lbs. Thats pretty good considering its 30lbs from the TOP of the car.
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07-27-2007, 01:07 PM	#9
BForbes Moderator 559 Rep 4,240 Posts Drives: BSM 135i/AW E90 M3 Join Date: Feb 2007 Location: Orlando, FL iTrader: (0)	^^Oh my god. Two words come to my mind. __________________ - 04 Honda S2000(gone)
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07-27-2007, 01:19 PM	#10
Mahlzeit Lieutenant 37 Rep 582 Posts Drives: 1M Join Date: Jul 2007 Location: Location Location iTrader: (0)	Holy-overkill. While it looks neat, unless you're actually competitively racing, why bother? Actually, even the limitless budget pro racers don't build CF roofs onto their e90s. I'll keep my sunroof and enjoy the the free tan. If you're so serious about performance,........ get coilovers and an LSD. -Mahlzeit
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07-27-2007, 01:23 PM	#11
Driv3r Colonel 177 Rep 2,355 Posts Drives: 2006 E46 M3 ZCP Join Date: May 2005 Location: Miami Beach, FL iTrader: (8) Garage List 2006 325i [0.00]	the difference in weight wont matter as much as improving the driver in the hot seat...not offending anyone but thats what i go by... __________________ 2006 E46 M3 ZCP 6SPD-Interlagos Blue - 6SPD - SSK - AA Headers -AA Tune - Navigation w/ Splashscreen Mod - 3M Crystalline Series 60 - Carbon Splitters - Swissvax Treated - Bridgestone 2012 Yamaha FZ8 - Matte Black/Grey - Michelin Pilot Pure 2CT - Vortex Rear Sets - Yoshimura R-77D & Fender Delete - Spectro Race Oil - GP Reverse Shifting
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07-27-2007, 01:26 PM	#12
Mahlzeit Lieutenant 37 Rep 582 Posts Drives: 1M Join Date: Jul 2007 Location: Location Location iTrader: (0)	BTW over the years I have accepted that many car-folks are into looks more than lap times, and I can respect that. To each their own,.... and I do admit I like looking at cars, and not just driving them. Cheers!
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07-27-2007, 03:42 PM	#16
bats Chilly Willy. 0 Rep 65 Posts Drives: Join Date: Jul 2007 iTrader: (0)	If an "M1" is truly in the works, it should have a CF roof, along with other weight saving goodies. Custom Fabricating, like above, was probably an insane amount of money. I think I remember reading that thread before, linked off bf.c Yes, I will definitely give you props for undergoing such a project :thumbup: , but at what cost? :iono:
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07-27-2007, 03:52 PM	#17
joearlo New Member 0 Rep 9 Posts Drives: Join Date: Jan 2007 iTrader: (0)	Oh the possibilities! I agree there is probably a better way to spend time/money - but us enthusiasts never have been known for our practicality have we?
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07-27-2007, 04:01 PM	#18
Vornado A swell fellow 3 Rep 146 Posts Drives: Hot air balloon Join Date: Feb 2007 Location: Texas iTrader: (0)	Not one of these threads again. Long live the sunroof!!! LOL. j/k but not really.
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07-27-2007, 04:17 PM	#19
adc Major General 2750 Rep 6,759 Posts Drives: 2018 F80 M3 ED Join Date: Sep 2006 Location: MD/DC iTrader: (12)	It's certainly possible to do a CF roof swap. But I'll side with those who believe that swapping out the wheels/tires, exhaust, seats will net you at least 150lbs, perhaps more. Even though it's not at the top of the car, it's a more significant weight loss. Add another 30-40lbs from front CF hood and rear CF trunk and perhaps another 30lbs from tossing the rear seats out the window - many possibilities, all for a lower budget than the CF roof. OH wait, titanium lug bolts are known to save some 5lbs or so... I also wonder how well the CF roof swap is engineered and what it does for your rollover protection...
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07-27-2007, 04:44 PM	#20
imported_tdc Private First Class 11 Rep 188 Posts Drives: Join Date: Jun 2007 iTrader: (0)	CF roof conversions have been done on quite a number of E46 M3's. And although it is expensive, it isn't as astronomical as one would think. As for the rollover protection, it's just as structurally sound as the regular roof as it's the a-pillars, b-pillars, and c-pillars that provide most of the strength in a rollover. __________________ [SIGPIC][/SIGPIC]
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07-27-2007, 11:33 PM	#22
R32 Second Lieutenant 7 Rep 222 Posts Drives: Join Date: Jul 2007 iTrader: (0)	weight issues aside, i am a little worried about the headroom in the 1-series. in an e46, my helmet touches the roofliner with the seat all the way down, and i'm six feet even. perhaps it could be an option if you take european delivery (fingers crossed).
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