[Thor]

A while back there were some posts stating that e92 had TPMS but e90 did not.

Other posts then stated that e90 will have TPMS starting with the March 2007 production.

So all you guys with March production Sedans - do you have TPMS or not?

Thanks.

[LEDZEP]

Um, I'm probably just dumb, but you'll need to tell me what TPMS is first.

I know all about PMS... but not sure what the T is for.

[Thor]

TPMS is the tire pressure monitoring system - the active one with the sensors in the wheels.

[txusa03]

Originally Posted by LEDZEP

Um, I'm probably just dumb, but you'll need to tell me what TPMS is first.

I know all about PMS... but not sure what the T is for.

yo LEDZEP man, get your head out of the gutter , it is Tire Pressure Monitor System

BTW, to OP, I cannot answer that questions since I am not fortunate enuf to have a 07 e90 like some folks on here who just traded in their 06 for an 07 e90 (hm who could that be)

[LEDZEP]

Oh. It must, because my owner's manual covers it. It has two sections: Flat Tire Warning and Tire Pressure Monitor.

[Noob]

Originally Posted by Thor

A while back there were some posts stating that e92 had TPMS but e90 did not.

Other posts then stated that e90 will have TPMS starting with the March 2007 production.

So all you guys with March production Sedans - do you have TPMS or not?

Thanks.

My 335 sedan is from January 07 production and I have TPMS.

[E90Fleet]

I think some are getting confused

The question is does the March production USA E90'd have the crappy US DOT mandated tire pressure system that uses a sensor in the wheel to determine if one is flat, like on the USA E92, instead of the original more advanced system as found in all contries not served by BMW NA and older E90

[E90Fleet]

I dont have access to the march production data today, so can only check later

People with USA march production E90 can check if they have this sensor on the inside of the wheel arch cover

[Noob]

What is a quaestion? lol

[LEDZEP]

Originally Posted by E90Fleet

I think some are getting confused

The quaestion is does the March production USA E90'd have the crappy US DOT mandated tire pressure system that uses a sensor in the wheel to determine if one is flat, like on the USA E92, instead of the original more advanced system as found in all contries not served by BMW NA and older E90

Well mister, you're not going to get that work visa approved any faster by bashing our DOT.

I guess this would also explain why my new car has metal valve stems instead of rubber ones. And I thought they were just going upscale. I'm a dolt on this topic and would love to learn more... the manual is sparse.

[JSpira]

Originally Posted by E90Fleet

The question is does the March production USA E90'd have the crappy US DOT mandated tire pressure system that uses a sensor in the wheel to determine if one is flat, like on the USA E92, instead of the original more advanced system as found in all contries not served by BMW NA and older E90

How is the older system more advanced? The older system tells you if you have a flat (hence, Flat Tire Monitor) but not if all 4 go low. The new system is supposed to give better information.

[caesardog217]

Yes, I just orderd my car on 3/26 and it has it. Maybe thats why the price went up

[gary328xi]

Easy was to find out..DO YOU HAVE RUBBER OR RIGID VALVE STEMS??

Rubber= FTM
Rigid= TPMS

[Noob]

Originally Posted by caesardog217

Yes, I just orderd my car on 3/26 and it has it. Maybe thats why the price went up

The price has gone up?
By how much?

[E90Fleet]

Originally Posted by LEDZEP

Well mister, you're not going to get that work visa approved any faster by bashing our DOT.

I guess this would also explain why my new car has metal valve stems instead of rubber ones. And I thought they were just going upscale. I'm a dolt on this topic and would love to learn more... the manual is sparse.

Ah, I think the metal stems are another clue



In a nutshell

The US DOT decided that by 2009 all new cars sold in the USA need to be fitted with a system to tell the driver if the car has a flat.

BMW already had such a system, as did other European manufacturers.
Infact, they were n the 2nd generation of this system that used ABS sensors to determine if there was a rolling diameter change in the wheel, which would mean it was loosing pressure.


But the DOT wants all cars to have a sensor inside the wheels, which is how the 1st generation systems worked on things like the early 7 Series.

This unlike the 2nd generation system, causes the alert to sound if you fit a wheel without a sensor and the sensors can get damaged when new tires are fitted.

But the DOT makes the rules, so last year the USA 5 Series got them, as did the E92.
Seems the E90 now also got them.

The rest of the world keeps the 2nd generation system

[gary328xi]

$200 on invoice and $80 more for delivery.

[E90Fleet]

Originally Posted by JSpira

How is the older system more advanced? The older system tells you if you have a flat (hence, Flat Tire Monitor) but not if all 4 go low. The new system is supposed to give better information.

As you could tell from my above post

The 1st generation systems used a sensor in the wheel, as found in early E65 7 Series

The 2nd generation system doesnt, is more accurate, and doesnt have the drawbacks of the 1st generation system

But DOT rules call for a 1st generation type system

Thats why only the USA gets it


BMW had a nice training video on this when the USA 5 Series changed last year

[JSpira]

Originally Posted by E90Fleet

As you could tell from my above post

The 1st generation systems used a sensor in the wheel, as found in early E65 7 Series

The 2nd generation system doesnt, is more accurate, and doesnt have the drawbacks of the 1st generation system

But DOT rules call for a 1st generation type system

Thats why only the USA gets it

Isn´t there then a third system, which is/was the FTM?

[LIQUIX]

So for those of with March production E90's, we cannot just simply change our wheels, but we must purchase the TPMS from TireRack? If we don't then we will get a warning light, correct?

[E90Fleet]

Originally Posted by JSpira

Isn´t there then a third system, which is/was the FTM?

1st generation system was/is a TPMS, because it looks at the actual pressure in the tire itself

2nd generation system is a FTM, becuase it uses the ABS sensors to check for a flat tire. It looks at rolling diameter and not pressure

[E90Fleet]

Originally Posted by LIQUIX

So for those of with March production E90's, we cannot just simply change our wheels, but we must purchase the TPMS from TireRack? If we don't then we will get a warning light, correct?

If it has the sytem, then you either need to remove the sensor from the old wheels and put htem in the new ones, or buy a new wheel sensors .

[JSpira]

Originally Posted by E90Fleet

1st generation system was/is a TPMS, because it looks at the actual pressure in the tire itself

2nd generation system is a FTM, becuase it uses the ABS sensors to check for a flat tire. It looks at rolling diameter and not pressure

OK. So you are saying that the FTM in my 330xi is better than the TPMS?

I had understood the TPMS was more accurate.