Tire pressure monitors
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Joined: Dec 2004
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From: Dallas, TX
As I understand it, there's nothing in the tire or wheel. The car's computer measures variations in each wheel's rotational speed (similar to ABS) to sense a flat tire (i.e. flat tire = smaller diameter = faster rotation for given vehicle speed).
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Joined: Jan 2005
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From: South Africa
My Ride: 545i Mystic Blue/Black Leather Type 124 Wheels
The old 7 series system used sensors in the wheels
The newwer systems like on the E60 detect a change in the rolling diameter of the wheel via the DSC/ABS sensors
So you can fit any wheels and just reset the system
The newwer systems like on the E60 detect a change in the rolling diameter of the wheel via the DSC/ABS sensors
So you can fit any wheels and just reset the system
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Joined: Jun 2005
Posts: 151
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From: Netherlands
Originally Posted by E60Speed' date='Jul 20 2005, 09:23 PM
The old 7 series system used sensors in the wheels
The newwer systems like on the E60 detect a change in the rolling diameter of the wheel via the DSC/ABS sensors
So you can fit any wheels and just reset the system
The newwer systems like on the E60 detect a change in the rolling diameter of the wheel via the DSC/ABS sensors
So you can fit any wheels and just reset the system
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Also the e39 had this system called Reifen Druck Control or RDC based upon sensors in the wheels.
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Joined: May 2005
Posts: 667
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From: Tallahassee, FL
My Ride: Jet Black 545i
Thanks guys! I had a C5 Corvette and it had these sensor things where the valve stem goes inside the wheel, so I figured the BMW had a similar system.
I have to say, although you can't see the PSI I prefer the BMW system.
I have to say, although you can't see the PSI I prefer the BMW system.
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