Mystery boot void: next to toolkit/battery in coupe?

krusty · 08-05-2011, 02:16 PM

If you remove the hard board cover in an E86 coupe's boot (maybe roadster too?) ... to expose the battery, ... there is:
a) a large compartment for the battery - nice and snug ...
b) a tiny compartment for the tool kit ... nice and snug and
c) an empty rectangular void in front of the battery and to the left of the tool kit .... which looks like it has been specially designed for something? Anyone have any idea what this was designed for? The BMW contraband cavity?

I now keep my Z4 Owner's Booklet in there (have to put some padding around it, because the edges of that box are rough and will make marks on it) .... This frees up the nets in the boot for other storage goodies.

SCHMOUPE · 08-05-2011, 02:36 PM

you talking about the air compressor?

krusty · 08-05-2011, 02:40 PM

Maybeeee?? Z4Ms don't have run flats, so maybe the cavity was added for the Ms??

SCHMOUPE · 08-05-2011, 02:44 PM

http://realoem.com/bmw/showparts.do?...02&hg=71&fg=07

krusty · 08-05-2011, 02:49 PM

That empty void could you be quite useful actually: one could add a mobile ethernet hub in there, powered from the battery and connected to the external aerial (so you don't get any mobile phone radiation within the car) ... and then have fast wired ethernet access in the car for a future iPad3 that supports USB or Thunderbolt.

[ I really don't like mobile radiation in cars: it can be about 10 times stronger in a moving vehicle than if stationary outside.]

Hawkeye · 08-08-2011, 11:07 AM

I have my owners manual there as well. Since you said void I am assuming you do not have an M and therefore would not "need" the air compressor.

psygnosis · 08-08-2011, 11:54 AM

Because of the dual exhaust, the Z4 M models don't have the battery in the floor.

Edit: On the roadsters, the amp for the radio is down there next to the battery. Maybe the coupe and roadster use the same floor compartment but maybe because the coupe was designed alongside the M cars the amp was relocated in the coupe?

gferil · 08-08-2011, 07:32 PM

Well, for what it's worth I have a US spec E86 M coupe and my battery hump is on the passenger (right) side of the trunk, you remove that hard cover and underneath is a styrofoam tray that is covering the battery, in that styrofoam tray there are three compartments, far left is a thin rectangle for the tool kit, then center is an almost square compartment for the air compresser, and then far right towards the front of the car there is a cylinder shaped compartment for the M Mobility canister. Once you remove that foam tray, the battery is located snugly beneath it.

krusty · 10-06-2011, 09:50 AM

Just to follow-up:

a) I was referring to non-M coupes.

b) The boot void I was referring to is this one (see pic: below the battery, and to the left of the toolkit)

Am I correct in saying that this was originally designed for the hi-fi amplifier? My amp is certainly not there (the Carver amp: not sure where it is).

Anyone know if, when and why the amps were moved out of this special cavity?

psygnosis · 10-06-2011, 11:22 AM

Yep that void is where the amp goes in non-M roadsters, I don't know where they put it in the Z4M roadster or the coupes.

08-05-2011, 02:16 PM	#1
krusty Second Lieutenant 24 Rep 291 Posts Drives: Z4 coupé Join Date: Jun 2011 Location: Australia iTrader: (0)	Mystery boot void: next to toolkit/battery in coupe? If you remove the hard board cover in an E86 coupe's boot (maybe roadster too?) ... to expose the battery, ... there is: a) a large compartment for the battery - nice and snug ... b) a tiny compartment for the tool kit ... nice and snug and c) an empty rectangular void in front of the battery and to the left of the tool kit .... which looks like it has been specially designed for something? Anyone have any idea what this was designed for? The BMW contraband cavity? I now keep my Z4 Owner's Booklet in there (have to put some padding around it, because the edges of that box are rough and will make marks on it) .... This frees up the nets in the boot for other storage goodies.
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08-05-2011, 02:36 PM	#2
SCHMOUPE Lieutenant Colonel 127 Rep 1,772 Posts Drives: 2007 Z4M Coupe Join Date: Apr 2010 Location: NJ iTrader: (7) Garage List 2007 Z4M Coupe [0.00]	you talking about the air compressor? __________________ Gruppe M CAI / Euro Headers / Rogue Engineering X-pipe / RE Diablo Exhaust
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08-05-2011, 02:40 PM	#3
krusty Second Lieutenant 24 Rep 291 Posts Drives: Z4 coupé Join Date: Jun 2011 Location: Australia iTrader: (0)	Maybeeee?? Z4Ms don't have run flats, so maybe the cavity was added for the Ms??
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08-05-2011, 02:44 PM	#4
SCHMOUPE Lieutenant Colonel 127 Rep 1,772 Posts Drives: 2007 Z4M Coupe Join Date: Apr 2010 Location: NJ iTrader: (7) Garage List 2007 Z4M Coupe [0.00]	http://realoem.com/bmw/showparts.do?...02&hg=71&fg=07 __________________ Gruppe M CAI / Euro Headers / Rogue Engineering X-pipe / RE Diablo Exhaust
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08-05-2011, 02:49 PM	#5
krusty Second Lieutenant 24 Rep 291 Posts Drives: Z4 coupé Join Date: Jun 2011 Location: Australia iTrader: (0)	That empty void could you be quite useful actually: one could add a mobile ethernet hub in there, powered from the battery and connected to the external aerial (so you don't get any mobile phone radiation within the car) ... and then have fast wired ethernet access in the car for a future iPad3 that supports USB or Thunderbolt. [ I really don't like mobile radiation in cars: it can be about 10 times stronger in a moving vehicle than if stationary outside.]
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08-08-2011, 11:07 AM	#6
Hawkeye Brigadier General 2070 Rep 4,365 Posts Drives: '07 Z4 Coupe, '21 X3, '16 GMC Join Date: Aug 2007 Location: Iowa iTrader: (0) Garage List 2016 GMC Sierra SLT [10.00] 2008 Yamaha R6 [9.00]	I have my owners manual there as well. Since you said void I am assuming you do not have an M and therefore would not "need" the air compressor. __________________ 2007 Z4 3.0si Coupe • 6 MT • Black Saphire Metallic • PP • SP 2016 GMC Sierra SLT Z71 Premium Plus 4x4 2017 Harley StreetGlide • Denim Black • V&H Tune 2021 BMW x30i • Phytonic Blue Metallic • Fully loaded
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08-08-2011, 11:54 AM	#7
psygnosis Major 23 Rep 1,034 Posts Drives: '04 Z4 3.0i Sport Join Date: Nov 2008 Location: WA iTrader: (0)	Because of the dual exhaust, the Z4 M models don't have the battery in the floor. Edit: On the roadsters, the amp for the radio is down there next to the battery. Maybe the coupe and roadster use the same floor compartment but maybe because the coupe was designed alongside the M cars the amp was relocated in the coupe? __________________ Straightaways are for fast cars, Corners are for fast drivers. Last edited by psygnosis; 08-08-2011 at 02:31 PM..
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08-08-2011, 07:32 PM	#8
gferil Captain 30 Rep 740 Posts Drives: 06 Z4MC Join Date: Dec 2010 Location: San Francisco, CA iTrader: (6)	Well, for what it's worth I have a US spec E86 M coupe and my battery hump is on the passenger (right) side of the trunk, you remove that hard cover and underneath is a styrofoam tray that is covering the battery, in that styrofoam tray there are three compartments, far left is a thin rectangle for the tool kit, then center is an almost square compartment for the air compresser, and then far right towards the front of the car there is a cylinder shaped compartment for the M Mobility canister. Once you remove that foam tray, the battery is located snugly beneath it.
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10-06-2011, 09:50 AM	#9
krusty Second Lieutenant 24 Rep 291 Posts Drives: Z4 coupé Join Date: Jun 2011 Location: Australia iTrader: (0)	Just to follow-up: a) I was referring to non-M coupes. b) The boot void I was referring to is this one (see pic: below the battery, and to the left of the toolkit) Am I correct in saying that this was originally designed for the hi-fi amplifier? My amp is certainly not there (the Carver amp: not sure where it is). Anyone know if, when and why the amps were moved out of this special cavity? Attached Images
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10-06-2011, 11:22 AM	#10
psygnosis Major 23 Rep 1,034 Posts Drives: '04 Z4 3.0i Sport Join Date: Nov 2008 Location: WA iTrader: (0)	Yep that void is where the amp goes in non-M roadsters, I don't know where they put it in the Z4M roadster or the coupes. __________________ Straightaways are for fast cars, Corners are for fast drivers.
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