TPMS and spare tire question

The Black Sheep · 03-26-2016, 09:09 PM

I think I know the answer to this, but just want confirmation. I'm going to upgrade my badly curbed 17" wheels for new 19" hoops. I plan on buying new TPMS modules for the new wheels and I'm not going to be mounting RFT's. Because of that, I want to use the one 17" wheel I have that is not curbed as a spare tire. Do I have to remove the TPMS module from this one wheel so as not to confuse the computer with 5 tire readings?

The Black Sheep · 03-27-2016, 09:29 AM

Haha... over 40 views and not one person can say, "Yes, moron, you have to take it out!" Either that, or no one else knows how the system works...

The Black Sheep · 03-27-2016, 02:43 PM

Bueller... Bueller...

Just to elaborate... I don't know how the system works exactly. So I am thinking that maybe the system is dumb and only gives a warning when one of the sensors gives a low pressure signal. If that's the case, then an extra sensor won't matter. But if it's a smart system and knows which wheel is low, then an extra sensor might be a problem.

Rudy@tirerack · 03-28-2016, 10:03 AM

The vehicle is only able to monitor 4 tpms sensors at a time. When you install your new wheels, you will also want to program the new tpms sensors to the car. Once the 4 new sensors are programmed, those are the only 4 sensors that the car will recognize.
So you can leave the one sensor in the spare wheel or remove it. Won't make a difference either way.

The Black Sheep · 03-28-2016, 12:41 PM

Thanks for the info!

03-26-2016, 09:09 PM	#1
The Black Sheep Professional Driver 28 Rep 90 Posts Drives: 2007 328i Coupe Join Date: Feb 2016 Location: Earth iTrader: (0)	TPMS and spare tire question I think I know the answer to this, but just want confirmation. I'm going to upgrade my badly curbed 17" wheels for new 19" hoops. I plan on buying new TPMS modules for the new wheels and I'm not going to be mounting RFT's. Because of that, I want to use the one 17" wheel I have that is not curbed as a spare tire. Do I have to remove the TPMS module from this one wheel so as not to confuse the computer with 5 tire readings?
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03-27-2016, 09:29 AM	#2
The Black Sheep Professional Driver 28 Rep 90 Posts Drives: 2007 328i Coupe Join Date: Feb 2016 Location: Earth iTrader: (0)	Haha... over 40 views and not one person can say, "Yes, moron, you have to take it out!" Either that, or no one else knows how the system works...
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03-27-2016, 02:43 PM	#3
The Black Sheep Professional Driver 28 Rep 90 Posts Drives: 2007 328i Coupe Join Date: Feb 2016 Location: Earth iTrader: (0)	Bueller... Bueller... Just to elaborate... I don't know how the system works exactly. So I am thinking that maybe the system is dumb and only gives a warning when one of the sensors gives a low pressure signal. If that's the case, then an extra sensor won't matter. But if it's a smart system and knows which wheel is low, then an extra sensor might be a problem.
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03-28-2016, 10:03 AM	#4
Rudy@tirerack Moderator 123 Rep 281 Posts Drives: rudy@tirerack.com Join Date: Feb 2016 Location: 1-800-428-8355 EXT 4664 iTrader: (0)	The vehicle is only able to monitor 4 tpms sensors at a time. When you install your new wheels, you will also want to program the new tpms sensors to the car. Once the 4 new sensors are programmed, those are the only 4 sensors that the car will recognize. So you can leave the one sensor in the spare wheel or remove it. Won't make a difference either way.
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03-28-2016, 12:41 PM	#5
The Black Sheep Professional Driver 28 Rep 90 Posts Drives: 2007 328i Coupe Join Date: Feb 2016 Location: Earth iTrader: (0)	Thanks for the info!
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