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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Tpms?



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      01-22-2013, 07:03 AM   #1
s4nye
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Tpms?

I just bought a used 335i and noticed that I have rubber valve stems. Does this mean I don't have the tpms monitors? Reason I'm asking is because I'm buying new wheels and would like to know before installing tires. Thanks!
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      01-22-2013, 07:23 AM   #2
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Yes. It has them. All cars in the US must have them as of 2007.
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      01-22-2013, 09:25 AM   #3
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Quote:
Originally Posted by s4nye View Post
I just bought a used 335i and noticed that I have rubber valve stems. Does this mean I don't have the tpms monitors? Reason I'm asking is because I'm buying new wheels and would like to know before installing tires. Thanks!
You don't have them. TPMS have metal valve stems. You can also check realoem to find out if your car has them.
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      01-22-2013, 12:41 PM   #4
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My mistake. The legislation took effect in September of 2007. So I guess if you have rubber stems and a build before then, you dont have them.
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      01-22-2013, 12:56 PM   #5
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Quote:
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You don't have them. TPMS have metal valve stems. You can also check realoem to find out if your car has them.
+1

2008+ US models have TPMS sensors. 2007 models are mixed so a simple check of the valve stem is used to confirm whether or not you have them.
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      01-22-2013, 01:38 PM   #6
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Not true. My car has the TPMS with rubber stems and a build date of Nov. 2006.
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      01-23-2013, 09:34 AM   #7
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Not true. My car has the TPMS with rubber stems and a build date of Nov. 2006.
Yes, it is true. 2006 and 2007 Model years with OE rubber valve stems have the FTM (flat tire monitoring) system which does not use TPMS (tire pressure monitoring sensors).
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      01-23-2013, 12:59 PM   #8
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Quote:
Originally Posted by Gary@TireRack
Quote:
Originally Posted by SmoothStyle1 View Post
Not true. My car has the TPMS with rubber stems and a build date of Nov. 2006.
Yes, it is true. 2006 and 2007 Model years with OE rubber valve stems have the FTM (flat tire monitoring) system which does not use TPMS (tire pressure monitoring sensors).
How does the system monitor the tire pressure if there isn't a sensor?
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      01-23-2013, 01:00 PM   #9
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Quote:
Originally Posted by Gary@TireRack
Quote:
Originally Posted by SmoothStyle1 View Post
Not true. My car has the TPMS with rubber stems and a build date of Nov. 2006.
Yes, it is true. 2006 and 2007 Model years with OE rubber valve stems have the FTM (flat tire monitoring) system which does not use TPMS (tire pressure monitoring sensors).
How does the system monitor the tire pressure if there isn't a sensor?
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      01-23-2013, 01:34 PM   #10
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Quote:
Originally Posted by s4nye View Post
How does the system monitor the tire pressure if there isn't a sensor?
Wheel rotation, as the tire goes flat the outside diameter gets smaller and wheel spins faster, setting off code.
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      01-23-2013, 04:11 PM   #11
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Originally Posted by bavarianx View Post
Wheel rotation, as the tire goes flat the outside diameter gets smaller and wheel spins faster, setting off code.
Correct. I believe it use the ABS sensors/system to monitor this.
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      01-24-2013, 08:54 PM   #12
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Originally Posted by Hybrid For Life View Post
Correct. I believe it use the ABS sensors/system to monitor this.
So if I have a 2006 prelci 325xi and I buy new rims. I won't need tpms sensors? And it will be monitored by ftm?
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      01-24-2013, 09:23 PM   #13
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So if I have a 2006 prelci 325xi and I buy new rims. I won't need tpms sensors? And it will be monitored by ftm?
correct, no TPMS needed
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      01-24-2013, 09:35 PM   #14
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correct, no TPMS needed
Sweet saves me a couple bucks. thanks for the reply!
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      01-25-2013, 12:37 AM   #15
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Sweet saves me a couple bucks. thanks for the reply!
Couple? Aren't those things like 100 bucks per wheel?
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      01-25-2013, 08:45 AM   #16
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This is great info, so to sum up, if I have rubber valve stems I don't not have TPS sensors in my wheels?
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      01-25-2013, 12:23 PM   #17
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Couple? Aren't those things like 100 bucks per wheel?
yeah, they are around 50-70 i think.
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      01-31-2013, 06:38 AM   #18
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This is great info, so to sum up, if I have rubber valve stems I don't not have TPS sensors in my wheels?
Can someone confirm this? or should I stop buy the dealer and asked them. I don't know as I only bought the car last Oct and am looking to buy some summer wheels.
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      01-31-2013, 03:03 PM   #19
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Quote:
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Can someone confirm this? or should I stop buy the dealer and asked them. I don't know as I only bought the car last Oct and am looking to buy some summer wheels.
If you have rubber stems and no TPMS malfunction light is on, then you do not have the RDC TPMS system (valve stem sensors mounted in the wheels)

The only exception to this is some new wheel designs that relocate the TPMS sensor (strapped or bracketed to the wheel) and implement a regular valve stem, but I'm sure you do not have to worry about that .
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      01-31-2013, 05:38 PM   #20
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Thank you Phill
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      01-31-2013, 09:45 PM   #21
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I have a 2007 model with a NOV/2006 build date...NO TPMS!!!

At first, I was disappointed in the fact that I had no TPMS, only the system the rest of the automotive world uses outside of the USA.

Now I am soooo happy that I don't have to mess with having to install a set of $300+ sensors in my wheels!

Be happy you don't have TPMS!
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