is it dangerous to have a donut in trunk in case of rearending?

FotiosF90M5 · 04-27-2007, 03:11 PM

I got the leatherz kit for my e90 and now im worried that it poses great danger to rear seat occupants in case of getting rear ended.I have a 5 month old and im very worried.I dont think I can keep it.If I was rear ended hard enough the wheel would have no place to go but forward into the rear seat.what do you guys think.Am I just paranoid or completely right.thanks in advance for any advice. btw the extended kit jack from bmw is a nice little kit.great jack and storage pack.

FotiosF90M5 · 04-27-2007, 03:12 PM

I already have a brand new mobility kit (OEM) that I bought a little while ago. Im not sure how reliable or difficult that is.

lyndon_h · 04-27-2007, 04:09 PM

LOL. I thought this thread was for humor. i thought you were going to ask if its ok to carry a donut around in case you need to give it to a cop.

Now that i've read your post, let me put on my serious hat.

I would be concerned also. IMO dont carry the donut. Get a AAA subscription or add the towing service to your cell phone account.

FotiosF90M5 · 04-27-2007, 06:57 PM

thats what im thinking.

subframe · 04-27-2007, 08:24 PM

I'm facing the same dilemna as I think about ditching my runflats. I remember my driver's ed teacher telling the class how dangerous it is to have an unachored spare in the trunk. It's dangerous in front-end collisions because when the car stops the loose object tends to keep going forward at whatever speed (Newton's 1st law). It could hit the back of the back seat pretty hard.

I was wondering whether the donut could be tied to one of the eyelets that's in the floor of the trunk (for the cargo net).

addicted 2 turbo · 04-27-2007, 09:10 PM

you guys got me thinkin because i have a spare tire on mine, i checked the trunk there is a large piece of metal between the rear seat and the trunk. I dont know if that is strong enough.

Carnage · 04-27-2007, 09:12 PM

It would take a pretty hard hit for it to be a concern and if you're hit that hard, you got bigger problems.

spacedogg · 04-28-2007, 12:40 AM

Quote:

Originally Posted by matsarge

It would take a pretty hard hit for it to be a concern and if you're hit that hard, you got bigger problems.

i also was gonna make some cheeky comment about not carrying around donuts with sprinkles cuz that would get messy.

but to be serious...yeah...but you gotta admit...a spare donut with tire probably weighs at LEAST 20-30 pounds...20 pounds getting flung around at 55mph could get pretty serious. Even if you are getting hit by a car at that speed...your car was designed with crumple zones to absorb the impact...but i don't know if the back seat was designed to take massive amounts of weight in an accident.

i would see if you can secure the spare tire down in some way...

M3 Piotr · 04-28-2007, 10:52 AM

I was thinking the same, since I'm putting my OEM RFT in storage and putting CSLs on. Want to get a spare as well. I might buy some straps, and just strap it down so it down move all over the trunk...what you all think?

M3 Piotr · 04-28-2007, 10:53 AM

Quote:

Originally Posted by fotios330i

thats what im thinking.

On the side note, how happy are you with your Eurobahn TT? Any gripes? Thanks

lyndon_h · 04-28-2007, 12:07 PM

Do you guys live in a fairly unpopulated area? If not, i wouldn't chance it. I've not gotten a flat in 6 years. If i do get one, i'll call a tow truck and spend the $70. IMO its just not worth the risk of injury to your loved ones if you should get rear ended. And newer cars are designed to with crumple zones, so the rear end may crumble if the car was not designed to have a spare in the rear. You might be taking a chance by having something as large as a tire back there. Of course, the same could be said about a set of golf club, etc.

khafner · 04-28-2007, 12:31 PM

I carry the conti kit - it fits nicely in the well in your trunk. I'd be very suspicious of a spare tire in the trunk. I do not believe you could anchor it well enough with tie downs. The only time the conti kit would not be enough is if you blew a hole in your tire or totally shredded it. That's what towing ins is for.

04-27-2007, 03:11 PM	#1
FotiosF90M5 ///M Specialist South Shore BMW 770 Rep 7,108 Posts Drives: 2021 M5 Comp BHG/Silverstone Join Date: Jan 2007 Location: South Shore, MA iTrader: (62)	is it dangerous to have a donut in trunk in case of rearending? I got the leatherz kit for my e90 and now im worried that it poses great danger to rear seat occupants in case of getting rear ended.I have a 5 month old and im very worried.I dont think I can keep it.If I was rear ended hard enough the wheel would have no place to go but forward into the rear seat.what do you guys think.Am I just paranoid or completely right.thanks in advance for any advice. btw the extended kit jack from bmw is a nice little kit.great jack and storage pack. __________________ 2021 M5 COMPETITION LCI Brands Hatch Gray on SIlverstone, carbon roof, comp wheels, Mperf splitter, carbon pro spoiler, carbon diffuser , carbon paddles, executive pkg. Dinan HAS, RaceChip, dinan spacers, FC stud kit, etc
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04-27-2007, 03:12 PM	#2
FotiosF90M5 ///M Specialist South Shore BMW 770 Rep 7,108 Posts Drives: 2021 M5 Comp BHG/Silverstone Join Date: Jan 2007 Location: South Shore, MA iTrader: (62)	I already have a brand new mobility kit (OEM) that I bought a little while ago. Im not sure how reliable or difficult that is. __________________ 2021 M5 COMPETITION LCI Brands Hatch Gray on SIlverstone, carbon roof, comp wheels, Mperf splitter, carbon pro spoiler, carbon diffuser , carbon paddles, executive pkg. Dinan HAS, RaceChip, dinan spacers, FC stud kit, etc
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04-27-2007, 04:09 PM	#3
lyndon_h Lieutenant Colonel 40 Rep 1,917 Posts Drives: e90 Join Date: Jan 2007 Location: Madagascar iTrader: (2)	LOL. I thought this thread was for humor. i thought you were going to ask if its ok to carry a donut around in case you need to give it to a cop. Now that i've read your post, let me put on my serious hat. I would be concerned also. IMO dont carry the donut. Get a AAA subscription or add the towing service to your cell phone account.
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04-27-2007, 06:57 PM	#4
FotiosF90M5 ///M Specialist South Shore BMW 770 Rep 7,108 Posts Drives: 2021 M5 Comp BHG/Silverstone Join Date: Jan 2007 Location: South Shore, MA iTrader: (62)	thats what im thinking. __________________ 2021 M5 COMPETITION LCI Brands Hatch Gray on SIlverstone, carbon roof, comp wheels, Mperf splitter, carbon pro spoiler, carbon diffuser , carbon paddles, executive pkg. Dinan HAS, RaceChip, dinan spacers, FC stud kit, etc
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04-27-2007, 08:24 PM	#5
subframe Private First Class 4 Rep 107 Posts Drives: '06 325i TitSil 6mt ZSP, ZPP, Join Date: Oct 2005 Location: Alexandria, VA iTrader: (0)	I'm facing the same dilemna as I think about ditching my runflats. I remember my driver's ed teacher telling the class how dangerous it is to have an unachored spare in the trunk. It's dangerous in front-end collisions because when the car stops the loose object tends to keep going forward at whatever speed (Newton's 1st law). It could hit the back of the back seat pretty hard. I was wondering whether the donut could be tied to one of the eyelets that's in the floor of the trunk (for the cargo net).
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04-27-2007, 09:10 PM	#6
addicted 2 turbo 3rd Brigade Combat Team 32 Rep 424 Posts Drives: BMW 335 & 328 Join Date: Jan 2007 Location: FORT CARSON, CO iTrader: (3)	you guys got me thinkin because i have a spare tire on mine, i checked the trunk there is a large piece of metal between the rear seat and the trunk. I dont know if that is strong enough. __________________ 2012 E92 335 , F30 328 , 09 535 88 RX7 Turbo, 85 RX7 2010 RX8
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04-27-2007, 09:12 PM	#7
Carnage Lieutenant General 341 Rep 16,407 Posts Drives: people insane Join Date: Jun 2005 Location: classified iTrader: (2)	It would take a pretty hard hit for it to be a concern and if you're hit that hard, you got bigger problems.
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04-28-2007, 10:52 AM	#9
M3 Piotr Lieutenant Colonel 402 Rep 1,858 Posts Drives: F80 M3 Frozen Black F87 M2 LBB Join Date: Apr 2007 Location: Florida, USA iTrader: (2) Garage List 2016 BMW F80 M3 [0.00] 2011 BMW E90 M3 (We ... [0.00]	I was thinking the same, since I'm putting my OEM RFT in storage and putting CSLs on. Want to get a spare as well. I might buy some straps, and just strap it down so it down move all over the trunk...what you all think?
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04-28-2007, 12:07 PM	#11
lyndon_h Lieutenant Colonel 40 Rep 1,917 Posts Drives: e90 Join Date: Jan 2007 Location: Madagascar iTrader: (2)	Do you guys live in a fairly unpopulated area? If not, i wouldn't chance it. I've not gotten a flat in 6 years. If i do get one, i'll call a tow truck and spend the $70. IMO its just not worth the risk of injury to your loved ones if you should get rear ended. And newer cars are designed to with crumple zones, so the rear end may crumble if the car was not designed to have a spare in the rear. You might be taking a chance by having something as large as a tire back there. Of course, the same could be said about a set of golf club, etc.
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04-28-2007, 12:31 PM	#12
khafner Private First Class 6 Rep 123 Posts Drives: e90 330i Join Date: Dec 2006 Location: fulton, ny iTrader: (0)	spare tires I carry the conti kit - it fits nicely in the well in your trunk. I'd be very suspicious of a spare tire in the trunk. I do not believe you could anchor it well enough with tie downs. The only time the conti kit would not be enough is if you blew a hole in your tire or totally shredded it. That's what towing ins is for.
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