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Originally Posted by robg' post='255380' date='Mar 15 2006, 07:19 PM
It may be a legal issue. I do not know all of the details, but I belive there is a new law which requires a certain percentage of cars to have flat tire monitoring. It is my understanding that the BMW method on the current E60 does not qualify under the law. Thus the switch. Tire shops, for one, do not like the individual tire / stem monitors. Apparently, they break easily and then the owner and tire shop end up in a fight over whether the monitor was broken before or after the car was in the shop.
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vern
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I think they need to do something to show which individual tire is losing pressure and by how much.
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Originally Posted by vern' post='255635' date='Mar 16 2006, 05:48 PM
"NHTSA regulation states that you have to have direct method to monitor presssue", monitoring through wheel speed was not good enough.With the new system there will be electronic sensors mounted directly on the valve of each wheel that can detect a sudden or slow loss of air pressure and alert the driver of the pressure loss.
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vern
cheers
vern
This is good news, atleast for them who'll purchase a new E60.
The old (current) system is not good!
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Originally Posted by tomwid' post='255619' date='Mar 16 2006, 07:26 AM
Yes, you are wrong about the bed of nails theory. Adding new wheels and tires with equal pressure will set off the monitoring system. So your theory is out.
Runflats sound much louder when flat, also, you can tell that it's flat by looking at it.
Runflats sound much louder when flat, also, you can tell that it's flat by looking at it.
Most people have said it is very hard to visually tell which RFT is actually flat, hence carrying a tire pressure gauge is usally a must if you're not driving fast enough for a noticeable difference in noise.
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