Tire pressure monitor sensors

[CYCLONE2]

I took my 2 front wheels in today to have the new Continental Extreme Contact DW tires installed. For some reason the rear tires are lost in UPS land somewhere. I've got the Ellipsoid wheels. I asked the installer if they were hard to take off and install. He said they were a little difficult. I asked him if the TPMS units made the installation more difficult. He told me there were no TPMS sensors on the wheel. :?
Is that true? I assumed there was some kind of device on the wheels but he said no. I know the car has that system so what's up with that?
Did someone steal them from me during the night? :x How does the system work? He said he's seen systems that sense ride height and that is how those systems work.
Maybe the sensor is in the valve?

 

[Half Colin]

The TPMS in US cars (guessing you're on the other side of the pond from your spelling of tyre! ) is different from European cars and does use pressure sensors in the wheels. I don't know what they look like but it does sound like you're missing them. You really need someone on your side to help you out.

 

[Liam-O]

If you mean when it checks for a flat, it does it by checking how many revolutions at a certain speed I believe.

 

[Adamski]

If you mean when it checks for a flat, it does it by checking how many revolutions at a certain speed I believe.

That was my understanding of how it worked...

 

[WLH]

CYCLONE2, what year is your Z?

 

[M@r]{]

Thats how it works on the 5 series, no sensors as such, just the rate of revolution.

 

[WLH]

Ok...It look like you have 2005 Zed and therefor no TPMS sensors. TPMS sensors started on the 2007 models for the US.

 

[cj_eds]

Yip, it guesses from the 4 wheel speed sensors that if one wheel is dragging its feet a little then its an underinflated tyre.

Problem being it can also go off for other reasons, like the wheels are experiencing different levels of grip. (Such as ice in winter.)

 

[CYCLONE2]

CYCLONE2, what year is your Z?

2005 with 18" ellipsoids.

 

[CYCLONE2]

I "ASSUMED" that if I lost a few pounds of pressure in a tire that the system would let me know about it. I then would check my tires, add the air needed to the problem tire, reset the system and away I go. I also "ASSUMED" there was a sensor of some kind in each wheel. I was surprised to hear there was not.
Thanks for the responses..........

 

[dan425]

When my tyre pressure was low the other day my run-flat warning light came on. I filled all four tyres up and reset the RFT system. No problems since.

Sent from my GT-I9100 using Tapatalk

 

[WLH]

CYCLONE2, what year is your Z?

2005 with 18" ellipsoids.

No worries as your model uses tire rotation measurement from the anti-lock brake system to determine if a tire has lost air. However, as I understand it it's not as accurate as the TPMS system and you can have quite a bit of air loss before you get a warning.

 

[WLH]

CYCLONE2, BTW you're going to really like the Continental Extreme Contact DW tires. They are just excellent...

 

[Liam-O]

As I found, losing air equally across all tyres meant no warning. I think the system is just to detect a flat, and is not a substitute to checking manually?

 

[Bumpy]

Tire sensors in North America work like this:
American cars have the built in sensors.
They can be identified by a stiffy valve stem.

Canadian cars monitor air pressure via the diameter of the tire when properly inflated, as interpreted by the ABS System.
They can be identified by a flexy valve stem.

Problems can arise cause alot of American Z's get imported into Canada.

My advice is to give the valve stems a wiggle and you will know right away where that tire came from.

 

[bcworkz]

Sorry Bumpy, what you say is not absolute. WLH is correct. Pre '07 US Zed's do not have built in sensors, such as mine. It is not Canadian because the way DRLs work is different. You may be right '07 and later.

 

[helalo]

same story. the shop was changing my tires and i asked him about the tire sensors and he goes "what tire sensors?"
im guessing the car calculates the rotation of the wheels in same motion at the same time ? whatever it is that it does, i know theres some kinda tire monitor, otherwise we wouldnt get the tire warning sign if sht goes bad.

 

[CrazyOneToo]

Tire sensors in North America work like this:
American cars have the built in sensors.
They can be identified by a stiffy valve stem.

Canadian cars monitor air pressure via the diameter of the tire when properly inflated, as interpreted by the ABS System.
They can be identified by a flexy valve stem.

Problems can arise cause alot of American Z's get imported into Canada.

My advice is to give the valve stems a wiggle and you will know right away where that tire came from.

Hello. Mine is 2007 model and has two stiff sensors. Am I missing two of them ? They are on the left front and right rear. Thanks.

 

[road warrior]

All this is just wonderful, but I'm old school and while it's a nice gadget and gizmo to play with you cant trust them. Check your tyres each week the proper way. I would no more rely on the sensors to tell me when it's low than I would expect a 5 year old to tie his shoe laces properly. And they have no interest in overinflated tyres. I looked at a fellas tyres yesterday at the zedfest and one tyre was 19psi and another was 39 psi, no warnings. Just check them properly with a gauge fellas.

 

[Thermaltake]

I have one of the chinese special incar tyre pressure monitors

https://www.amazon.co.uk/Rocboc-Wireless-Monitoring-Real-time-Temperature/dp/B07QZVG852/ref=lp_7108279031_1_6?s=automotive&ie=UTF8&qid=1567200263&sr=1-6

Look rediculous on the wheels, But works flawlessley.

Solar powered, Never left the car since putting it in. Have it stuck down right side of the dial facia, Fits in quite nicely.

Pressure if very accurate. Shows the exact same as any garage air machine ive used.

Interesting watching pressure change with temperature. Cold mornings will be 31 or so, Warm afternoon 33/34. One side facing the sun will always be 1-2 PSI higher than the other.