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Discussion Starter #1
I have been noticing that E39 cars I see in the junk yards with front and rear damage did not deploy the air bags.
Anyone else notice this...?

Click on the link below and scroll down and Select Make (BMW) and then Select Model (5 Series)
and then click on the windows to enlarge the pictures for exterior or interior image.

https://victoryautowreckers.com/mobile/inventory.aspx
 

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Nuclear engineer
02/2012 X5 35d M57Y CPO 99K miles NOKIAN WR G3 12K miles
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17,510 Posts
Airbag requires approx 7g of deceleration to deploy.
http://www.nhtsa.gov/people/injury/airbags/airbags03/page3.html
NHTSA said:
What You Need to Know About Air Bags, DOT HS 809 575

Air bags are typically designed to deploy in frontal and near-frontal collisions, which are comparable to hitting a solid barrier at approximately 8 to 14 miles per hour (mph). Roughly speaking, a 14 mph barrier collision is equivalent to striking a parked car of similar size across the full front of each vehicle at about 28 mph. This is because the parked car absorbs some of the energy of the crash, and is pushed by the striking vehicle. Unlike crash tests into barriers, real-world crashes typically occur at angles, and the crash forces usually are not evenly distributed across the front of the vehicle. Consequently, the relative speed between a striking and struck vehicle required to deploy the air bag in a real-world crash can be much higher than an equivalent barrier crash.
http://www.nhtsa.gov/people/injury/airbags/airbags03/page3.html
 

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Learning Every Day
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Most of the cars in my local yard are pretty well intact, front and rear, so no bags have been deployed. There is one every now and then that's been hit pretty hard and the bags deployed...
 
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