active kidney's

monterey · 11-11-2018, 06:41 PM

What's the point of having the door open and close on the kidneys? If the louvers broke closed, would the car overheat?

sinbad4 · 11-11-2018, 06:57 PM

Better aerodynamics when they are closed. Part of the reason X3 has astounding .29 coefficient of drag.

GT500R · 11-11-2018, 10:02 PM

“Helps” with gas mileage. Personally rather they be open for more cooling effect on radiator.

Ragnarkov · 11-11-2018, 11:24 PM

Quote:

Originally Posted by sinbad4

Better aerodynamics when they are closed. Part of the reason X3 has astounding .29 coefficient of drag.

I'm still amazed how far the car will coast when I'm in ECO mode. At time, I almost treat it like a game. lol.

Lux700 · 11-12-2018, 08:59 AM

Quote:

Originally Posted by GT500R

“Helps” with gas mileage. Personally rather they be open for more cooling effect on radiator.

If they need to be open, they will open. The engine has an optimum operating temperature spectrum, so the slats open and close depending on ambient conditions and heat sensor readings.

SROC3 · 11-12-2018, 10:13 AM

Too bad the 30i does't have active louvers.......

nogren · 11-12-2018, 10:20 AM

Quote:

Originally Posted by SROC3

Too bad the 30i does't have active louvers.......

I think it has been concluded that its market specific. Some markets do have them, some don't.

GT500R · 11-12-2018, 11:14 AM

Quote:

Originally Posted by Ragnarkov

I'm still amazed how far the car will coast when I'm in ECO mode. At time, I almost treat it like a game. lol.

That has a lot to do with the transmission and not so much the kidneys.

Neo1130 · 11-12-2018, 11:31 AM

If they stick closed the lower grill will likely let enough air in so it won't overheat.

shoptb · 11-13-2018, 07:57 AM

Quote:

Originally Posted by pheerIx

Protects radiator against rock impacts

Did you just brainstorm this? Not that it isn't creative, but I'd be curious if this was ever imagined by the engineers in München.

r33_RGSport · 11-13-2018, 08:29 AM

Quote:

Originally Posted by SROC3

Too bad the 30i does't have active louvers.......

Is it?
I thought they all do?
Because there is an aftermarket dual slat planned to be made. But the active grill will ruin the fitment.

titomi · 11-13-2018, 08:52 AM

Quote:

Originally Posted by nogren

Quote:

Originally Posted by SROC3

Too bad the 30i does't have active louvers.......

I think it has been concluded that its market specific. Some markets do have them, some don't.

what he's saying.

nyalpine90 · 11-13-2018, 10:23 AM

i believe my X3 has active grille, saw it closed while it was parked.
I will check today

zaitcev · 11-13-2018, 11:53 AM

Quote:

Originally Posted by monterey

What's the point of having the door open and close on the kidneys? If the louvers broke closed, would the car overheat?

There's still enough airflow from below to keep the car limping at lower power. The electric water pump is a bigger concern, IMHO.

sinbad4 · 11-14-2018, 08:52 PM

Quote:

Originally Posted by zaitcev

There's still enough airflow from below to keep the car limping at lower power. The electric water pump is a bigger concern, IMHO.

There are actually two water pumps, when mechanically driven, the other electric - as you noted.

Also interesting, this car doesn't have your historic thermostat.. more of a temperature router. Electronically controlled valve system that routes coolant depending on need.

mbear · 11-14-2018, 09:16 PM

We have them standard in Canada on the 30

Quote:

Originally Posted by SROC3

Too bad the 30i does't have active louvers.......

SROC3 · 11-15-2018, 11:27 PM

Quote:

Originally Posted by nyalpine90

i believe my X3 has active grille, saw it closed while it was parked.
I will check today

Actually I think the 30is and 40is all do as standard. Not sure of the other models.

XXX3 · 11-15-2018, 11:56 PM

Only seen mine open one time. Never owned a car that radiates heat for so many hours after parked in the garage.

BobsM3Coupe · 11-16-2018, 07:00 PM

Quote:

Originally Posted by XXX3

Only seen mine open one time. Never owned a car that radiates heat for so many hours after parked in the garage.

It was designed that way for a reason.

11-11-2018, 06:41 PM	#1
monterey Major 339 Rep 1,239 Posts Drives: 2008 M3 Join Date: Mar 2016 Location: United States iTrader: (1)	active kidney's What's the point of having the door open and close on the kidneys? If the louvers broke closed, would the car overheat? __________________ A job is nothing but work.
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11-11-2018, 06:57 PM	#2
sinbad4 Captain 783 Rep 911 Posts Drives: 2020 X3 M40i Join Date: Mar 2013 Location: MN iTrader: (0) Garage List 2019 BMW X3 M40i [0.00]	Better aerodynamics when they are closed. Part of the reason X3 has astounding .29 coefficient of drag.
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11-11-2018, 10:02 PM	#3
GT500R Major 800 Rep 1,219 Posts Drives: BMW X3M Join Date: May 2018 Location: NE iTrader: (0)	“Helps” with gas mileage. Personally rather they be open for more cooling effect on radiator.
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11-12-2018, 10:13 AM	#6
SROC3 The limit of adhesion is my home. 1702 Rep 3,778 Posts Drives: Like a Boss. Join Date: Sep 2006 Location: three.one.zero iTrader: (1)	Too bad the 30i does't have active louvers....... __________________ 2019 X3 xDrive30i Glacier Silver \| Cognac w/ Fine Cove \| MSport \| Premium \| Dynamic Handling PKG \| Drive Assist \| HK w/ Bavsound Upgrade \|
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11-12-2018, 11:31 AM	#9
Neo1130 Second Lieutenant 80 Rep 239 Posts Drives: 2019 X4 M40i Join Date: Sep 2018 Location: Rochester, WA iTrader: (0)	If they stick closed the lower grill will likely let enough air in so it won't overheat.
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11-13-2018, 10:23 AM	#13
nyalpine90 Lieutenant General 7433 Rep 11,843 Posts Drives: MY24 G01 AW Msport Join Date: Feb 2008 Location: L.I. NY iTrader: (4) Garage List 2016 BMW X4 [9.33]	i believe my X3 has active grille, saw it closed while it was parked. I will check today
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11-15-2018, 11:56 PM	#18
XXX3 Second Lieutenant 155 Rep 230 Posts Drives: X3 M40i Join Date: Apr 2018 Location: San Diego iTrader: (0)	Only seen mine open one time. Never owned a car that radiates heat for so many hours after parked in the garage. __________________ 2018 GO1 X3 M40i Alpine White 2018 Acura RDX Tech Pearl White 2016 Tundra TRD Pro (sold) 2013 Boss 302 Race Red (sold)
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