E90 Owners -- What Windows Do You Open When Running w/o AC

Quasimodem · 07-24-2013, 01:47 PM

So I was running in my "MPG" mode (as opposed to my usual "EGO" mode LOL) on the way to work because I was low on fuel.

So I turned off the AC and opened the passenger side windows an inch or two each. It causes a nice flow of air that circulates around the car, doesn't cause too much noise to interfere with my tunes

, and presumably doesn't cause too much wind resistance.

What windows do you open and why when running with the AC off?

Or if you never run without the AC, feel free to respond too.

yarviinn · 07-24-2013, 01:49 PM

Why not just set the settings to use outside air?

For me, I just roll down all the windows.... and top.

Castle · 07-24-2013, 01:53 PM

Never without A/C. However, when the car has been parked in the sun it gets very hot inside, so I just roll down the driver's and rear passenger windows. I've noticed air flows more freely that way than if I open both front windows. It looks kind of weird though, but it's only for a couple of blocks.

Meeni · 07-24-2013, 01:58 PM

Rear passenger side window, just 2/3 inches. It makes very little noise, and gives a nice refreshing flow on the neck.

Nr!qUe · 07-24-2013, 02:04 PM

tilt the sunroof and crack the rear passenger side. Flow of air wooshes from right behind you

Dozhdbog · 07-24-2013, 02:25 PM

I roll everything down, blast the AC and floor it.

Nr!qUe · 07-24-2013, 02:38 PM

Quote:

Originally Posted by Dozhdbog

I roll everything down, blast the AC and floor it.

might as well be Nicki Minaj
TOP DOWN A/C WITH THE COOLING SYSTEM

FrozenM3nace · 07-24-2013, 02:41 PM

Only driver and passenger side windows all the way down! Unless on the highway I open all of then a little bit since I got window visers

BenTrovato · 07-24-2013, 02:41 PM

When I'm in the four door I'll open 2 windows just a crack. Both on the drivers side or both on the passenger side. If you have dust floating around, you'll see this creates a flow out of the vehicle and cleans it up a bit. If you open opposite windows you get more flying dust around the car that will eventually settle.

thenewrick · 07-24-2013, 02:42 PM

I always drive with the top down, windows down, AC on 4 out of 7(so I don't get any A/C noise) with recirculating turned on and it's excellent.

ThEnder · 07-24-2013, 02:50 PM

Vent the sun roof and crack the rear windows or just go for the full monte.

ThEnder · 07-24-2013, 02:51 PM

Vent the sun roof and crack the rear windows or just go for the full monte.

Amini77 · 07-24-2013, 03:11 PM

When I roll them down its either all of them, the front 2, or a little on each window. I can't have one side be uneven with the other lol. Sometimes I have friends come in while all my windows are down and they roll theirs up and I get annoyed because it just looks weird....

rdub315 · 07-24-2013, 03:15 PM

Either all 4 down a few inches, or just opposite corners a few inches. Sunroof tilted in either case.

MGT81 · 07-24-2013, 05:41 PM

Tilt the sunroof (too loud fully open) and crack the front windows. I see zero point to blasting the AC and having all the windows down. Just seems stupid to me.

tri335 · 07-24-2013, 05:42 PM

all windows on my e92 and sunroof AND if its superhot or I just started the A/C set on "MAX!" best way to drive in the summer heat/humidity!

matty231 · 07-24-2013, 06:29 PM

I hate running AC lol don't wanna waste gas & wear the system but thats stupid so I just do it anyway... But if I can, i'll just run the sunroof down or windows down slightly!

fazman · 07-24-2013, 06:36 PM

Quote:

Originally Posted by matty231

I hate running AC lol don't wanna waste gas & wear the system but thats stupid so I just do it anyway... But if I can, i'll just run the sunroof down or windows down slightly!

Very bad idea to do this, your A/C system has oils in it to lubricate the O rings and what not. You should at least run the A/C for at least 10 minutes a month so you don't develop leaks in the system over time when those rubber seals dry/crack.

Even in the winter time, I crank up the heater and once its warm I'll pop on the A/C every now and then to De-humidify or De-fog any of the windows.

I have 20% Llumar tint all around (Sunroof is tinted 35% with Llumar) and when I park I make sure to face the windshield away from the angle of the sun (front into a space or back into a space, depending on the situation). If I'm driving and it's hot inside the car, I make sure to kick on the A/C at level 1 without recirculate/auto (basically just outside air because outside air is cooler then inside air) + have all the windows/sunroof fully opened... after a few minutes I'll hit the Auto button and close up everything. At that point I'm just chill'n like a villian, colder than a polar bears toe nails!

Brian! · 07-24-2013, 06:44 PM

Always roll down all the windows and sunroof, even on the highway doing 100km/h

I only turn on the A/C twice in this summer so far, usually when I dress up for dinner

I like the sun, and the air flows..

Noise doesnt bother me much as I will adjust the music volume just loud enough to cover the wind

(yeah, I am weird

)

taibanl · 07-24-2013, 06:47 PM

Unique thread

Hoooper · 07-24-2013, 07:15 PM

either all down or a/c on. I used to drive with the windows down a lot more but in my e90 the back seatbelts slap the seat in a really annoying way when going over about 35.

gtaccord · 07-24-2013, 07:16 PM

It's been proven or disproved (depending on which side of the argument that you are on) that running with the A/C off and the windows down is actually less efficient than running with the A/C on and windows up. Keeping out of the gas and keeping your tires properly inflated are about the best ways to improve mpgs.

07-24-2013, 01:47 PM	#1
Quasimodem Colonel 147 Rep 2,383 Posts Drives: 335d Join Date: Oct 2008 Location: California iTrader: (0) Garage List 2009 335d US [0.00]	E90 Owners -- What Windows Do You Open When Running w/o AC So I was running in my "MPG" mode (as opposed to my usual "EGO" mode LOL) on the way to work because I was low on fuel. So I turned off the AC and opened the passenger side windows an inch or two each. It causes a nice flow of air that circulates around the car, doesn't cause too much noise to interfere with my tunes , and presumably doesn't cause too much wind resistance. What windows do you open and why when running with the AC off? Or if you never run without the AC, feel free to respond too. __________________ Speakers: CDT Audio HD-42 comps--front doors (RAAMmat deadened), CDT ES-06 6.5" woofers--kickpanl Pods, Hertz EBX202R dual 8" ported trunk sub. Amps: Phoenix Gold RSd 500.4 (comps & pods). PG RSd 600.1 (sub). Power & Ground: 4AWG Streetwires w/RockFosgt RFDB1 distro blocks. Input: HU lineout--Kicker KISL RCA adapters--RockFosgt RFIT-6 cables--Audiocontrol Matrix--Monster cables--RSd 500.4--lineout Monstr Cabl to RSd 600.1.
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07-24-2013, 01:49 PM	#2
yarviinn Captain 21 Rep 687 Posts Drives: E9TT3 Join Date: Aug 2012 Location: NorCal iTrader: (1)	Why not just set the settings to use outside air? For me, I just roll down all the windows.... and top.
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07-24-2013, 01:53 PM	#3
Castle Second Lieutenant 17 Rep 276 Posts Drives: 2007 BMW 320i Join Date: Apr 2012 Location: - iTrader: (0)	Never without A/C. However, when the car has been parked in the sun it gets very hot inside, so I just roll down the driver's and rear passenger windows. I've noticed air flows more freely that way than if I open both front windows. It looks kind of weird though, but it's only for a couple of blocks. Last edited by Castle; 07-24-2013 at 02:06 PM..
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07-24-2013, 01:58 PM	#4
Meeni Gateropode 329 Rep 2,848 Posts Drives: BMW 330i 06 Join Date: Apr 2012 Location: TN iTrader: (0)	Rear passenger side window, just 2/3 inches. It makes very little noise, and gives a nice refreshing flow on the neck.
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07-24-2013, 02:04 PM	#5
Nr!qUe Captain 70 Rep 975 Posts Drives: 2009 E90 LCI 328i 6MT Join Date: Nov 2008 Location: Miami, FL iTrader: (3)	tilt the sunroof and crack the rear passenger side. Flow of air wooshes from right behind you __________________ 2009 BMW E90 328i \| Xenons \| MT \| Space Gray \| Beige-ette \| CF Fabric Trim \| iPod/USB \| 20% Tints \| Euro-Plate \| Rear Fog Switch Lego Mod \| Painted Reflectors \| Performance Short-shift Kit \| Style 197 Wheels \| OEM Sport Suspension \|
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07-24-2013, 02:25 PM	#6
Dozhdbog Lieutenant Colonel 86 Rep 1,849 Posts Drives: 2011 335i Sedan Join Date: Aug 2011 Location: Hollywood iTrader: (0)	I roll everything down, blast the AC and floor it. __________________ 2011 E90 / Premium Package / Stage 2 PPK / Performance Suspension
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07-24-2013, 02:41 PM	#8
FrozenM3nace First Lieutenant 36 Rep 391 Posts Drives: BMW M3 E92, E32 750il Join Date: Mar 2013 Location: Vancouver B.C iTrader: (0)	Only driver and passenger side windows all the way down! Unless on the highway I open all of then a little bit since I got window visers
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07-24-2013, 02:41 PM	#9
BenTrovato Driver 37 Rep 1,577 Posts Drives: e92 335i Join Date: Aug 2010 Location: Toronto iTrader: (4)	When I'm in the four door I'll open 2 windows just a crack. Both on the drivers side or both on the passenger side. If you have dust floating around, you'll see this creates a flow out of the vehicle and cleans it up a bit. If you open opposite windows you get more flying dust around the car that will eventually settle.
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07-24-2013, 02:42 PM	#10
thenewrick Captain 26 Rep 606 Posts Drives: 2007 E93 335i Black Sapphire Join Date: Dec 2012 Location: USA iTrader: (2)	I always drive with the top down, windows down, AC on 4 out of 7(so I don't get any A/C noise) with recirculating turned on and it's excellent.
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07-24-2013, 02:50 PM	#11
ThEnder First Lieutenant 26 Rep 336 Posts Drives: E90 LCI N54 6MT Join Date: May 2013 Location: San Francisco iTrader: (0)	Vent the sun roof and crack the rear windows or just go for the full monte.
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07-24-2013, 02:51 PM	#12
ThEnder First Lieutenant 26 Rep 336 Posts Drives: E90 LCI N54 6MT Join Date: May 2013 Location: San Francisco iTrader: (0)	Vent the sun roof and crack the rear windows or just go for the full monte.
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07-24-2013, 03:11 PM	#13
Amini77 Brigadier General 186 Rep 4,732 Posts Drives: Alpine White '13 550i Join Date: Nov 2011 Location: Tarzana, CA iTrader: (1) Garage List 2013 BMW 550i [0.00]	When I roll them down its either all of them, the front 2, or a little on each window. I can't have one side be uneven with the other lol. Sometimes I have friends come in while all my windows are down and they roll theirs up and I get annoyed because it just looks weird....
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07-24-2013, 03:15 PM	#14
rdub315 Captain 75 Rep 650 Posts Drives: '07 E90 335i Join Date: Jun 2010 Location: Traverse City, MI iTrader: (8) Garage List 2007 E90 335i [10.00]	Either all 4 down a few inches, or just opposite corners a few inches. Sunroof tilted in either case. __________________ - VTT Stage 2 turbos, VTT inlets, Cobb Pro Tune (E30 and 93 octane tunes), MFactory LSD, 335is clutch, CSF radiator, slim fans, Walbro 255, AE exhaust, AA downpipes, ETS FMIC, Vishnu DCI, ETS charge pipe, Tial BOV, BMS OCC - H&R Touring Cup Kit, Apex Arc8, M3 style front bumper, MTech style rear bumper and diffuser
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07-24-2013, 05:41 PM	#15
MGT81 Lieutenant 101 Rep 535 Posts Drives: 335xi Join Date: Jun 2012 Location: Calgary iTrader: (0)	Tilt the sunroof (too loud fully open) and crack the front windows. I see zero point to blasting the AC and having all the windows down. Just seems stupid to me.
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07-24-2013, 05:42 PM	#16
tri335 Enlisted Member 3 Rep 37 Posts Drives: 2009 335i xdrive coupe Join Date: Apr 2013 Location: Pittsburgh, PA iTrader: (0)	all windows on my e92 and sunroof AND if its superhot or I just started the A/C set on "MAX!" best way to drive in the summer heat/humidity! __________________ -- 2009 BMW 335i x-drive Coupe 2000 Honda Accord V4 Sedan with Thule Roof Rack (loved this car!)
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07-24-2013, 06:29 PM	#17
matty231 Second Lieutenant 19 Rep 243 Posts Drives: '08 E90 335i M Join Date: May 2008 Location: Kiwi Land! iTrader: (0)	I hate running AC lol don't wanna waste gas & wear the system but thats stupid so I just do it anyway... But if I can, i'll just run the sunroof down or windows down slightly! __________________ 2008 BMW 335i M-Sport Black Saph w/ Dakato Black \| M-Sport \| Sunroof \| iDrive \| 6SP Steptronic \| Comfort Access \| Lights Package \| JDM Spec
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07-24-2013, 06:44 PM	#19
Brian! Private First Class 3 Rep 105 Posts Drives: 2016 F36 435i Join Date: May 2013 Location: Vancouver iTrader: (0)	Always roll down all the windows and sunroof, even on the highway doing 100km/h I only turn on the A/C twice in this summer so far, usually when I dress up for dinner I like the sun, and the air flows.. Noise doesnt bother me much as I will adjust the music volume just loud enough to cover the wind (yeah, I am weird)
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07-24-2013, 06:47 PM	#20
taibanl Brigadier General 281 Rep 4,121 Posts Drives: BMW Join Date: Sep 2010 Location: NA iTrader: (4)	Unique thread
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07-24-2013, 07:15 PM	#21
Hoooper Colonel 213 Rep 2,210 Posts Drives: 335D Join Date: Jun 2013 Location: Petaluma, CA iTrader: (0)	either all down or a/c on. I used to drive with the windows down a lot more but in my e90 the back seatbelts slap the seat in a really annoying way when going over about 35.
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07-24-2013, 07:16 PM	#22
gtaccord Major 56 Rep 1,464 Posts Drives: 2009 BMW 335xi Join Date: Feb 2012 Location: Maryland iTrader: (7) Garage List 2009 BMW 335i xdrive [0.00]	It's been proven or disproved (depending on which side of the argument that you are on) that running with the A/C off and the windows down is actually less efficient than running with the A/C on and windows up. Keeping out of the gas and keeping your tires properly inflated are about the best ways to improve mpgs.
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