Hello,

I'm trying to find out more about this, I'm considering whether to get it as an option.

Does it give you tyre pressure info, or is it just going to light a warning light if pressure falls below a certain level?

Are there any batteries required for the sensors?

Cheers,

Richard.

it's all taken care of by the system.

My understanding is you inflate the tyres to the correct pressure. You then press the TPM button to "set" the system.

It measures rotational differences between tyres (I beleive on the same axle) to give an indication of changes in pressure (i.e. tyre circumference).

The system does measure pressures at all.

hope that helps

Hi,

Without getting too technical , the TPM works by sensing the differing rolling radius between a properly inflated tyre and a tyre which is losing pressure. You get no tyre pressure info , just a warning that something is wrong. No extra batteries required!!

Cheers.

Getting technical here.....Its rubbish and randomly goes off in mine even when all the pressures are the same and have been the same for some time. I have heard others say the same. It certainly shouldn't be a major influence into buying a car.

Well thats my pennth anyway

Chris

Hmm, thanks for the info guys. I think I'll give it a miss if it doesn't actually measure pressure. I check my tyre pressures every 3 weeks, I was hoping it might save me the hassle!

Cheers,

Richard.

Thought about specifying it on the new Octy, but decided that the money was better spent on a gallon of diesel! :weeping:

Thought about specifying it on the new Octy, but decided that the money was better spent on a gallon of diesel! :weeping:

With you house as collateral? :(

Feck, its getting expensive to drive even in a diesel!

Chris

TPMS is an important safety measure. I don't know how much it costs to justify it, but some countries are making TPMS a regulatory requirement on cars. You can give it a miss if you have a regular habit of checking tire pressure. Also since Octy's TPMS doesn't tell you which tire is losing pressure, you anyway need to carry a pressure gauge to find the faulty wheel.

I personally would buy it. No cutting costs when it comes to safety.

TPMS is an important safety measure. I don't know how much it costs to justify it, but some countries are making TPMS a regulatory requirement on cars. You can give it a miss if you have a regular habit of checking tire pressure. Also since Octy's TPMS doesn't tell you which tire is losing pressure, you anyway need to carry a pressure gauge to find the faulty wheel.

I personally would buy it. No cutting costs when it comes to safety.

I check my tyre pressures every 3 weeks without fail, probably should be done more often but it's better than most people. I suppose TPMS would be useful if I had a slow puncture during a long trip, it might warn me before the tyre got low enough for me to notice.

Something to think about I suppose...

R.

I personally would buy it. No cutting costs when it comes to safety.

Why don't you weld in a roll cage then? (sarcasm mode off).

Now if it told you WHICH tyre was getting flat, that might make it worth paying for.

Chris.

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Source:

Tire pressure monitoring system - Wikipedia, the free encyclopedia

The Firestone recall in the United States in the late 1990s that was attributed to more than 100 deaths from roll-overs following a tire tread-separation, pushed the Clinton administration to publish the TREAD Act. This act mandates the use of a suitable TPM technology in order to alert drivers of a severe under-inflation condition of their tires. This act affects all light motor vehicles (<10,000 lb) sold after September 1, 2007. Phase-in started in October 2005 at 20% and reaches 100% for models produced after September 2007. Whilst in the US TPMS legislation grew from safety-related motives, European Union (EU) and Far East legislators are looking at TPMS as a way of reducing CO2 emissions and are presently considering mandatory tire pressure monitoring from this environmental stance.

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How much does it cost, btw? My car Octy-2 has TPMS - but in India where I live I can't add specific features like TPMS, ESP, etc. We have to choose from 3 variants and thats about it. No add-this add-that. So I did not have to make a choice. I got heated seats which I will never use. Sad but like I said we don't have a choice. If I want a model that is without heated seats, I won't get TPMS, ESP, few airbags, sunroof and xenons which I definitely wanted.

Now if it told you WHICH tyre was getting flat, that might make it worth paying for.

We are in the Phaeton and Bentley league

Phaeton, Touareg and higher line 3C Passats have the full TPM systems. They have a sender in each tyre and a pick up in the wheel arch.

i beleive renualt do too. must say i only check the tyres once a month unless they dont look right or handle right. The only other time i give them a good check is before a long journey.

I've found that they'll only trigger a 3psi or more drop before warning the driver.

Although you can argue this allowence is acceptable since a hot tyre can read 3psi over the actual cold reading.

Was in one of the cars I've driven manuals years ago, so I always add 3psi if filling a tyre hot (ie long journey).

Phaeton, Touareg and higher line 3C Passats have the full TPM systems. They have a sender in each tyre and a pick up in the wheel arch.

last time i checked each sensor+transponder unit that sits on the wheel-rim (inside the tire) costs $20 something and they will have to be replaced on a regular basis (battery is not replaceable?).

Octy TPMS is nothing fancy, just uses the ABS control module to compare the wheel speeds and flag an error. It is not a potential maintenance burden.

How much does the TPMS option cost? I would have this instead of rain-sensing wipers, light-assist, etc. if they cost about the same.

How much does the TPMS option cost? I would have this instead of rain-sensing wipers, light-assist, etc. if they cost about the same.

About £80 iirc

-------------

Source:

Tire pressure monitoring system - Wikipedia, the free encyclopedia

The Firestone recall in the United States in the late 1990s that was attributed to more than 100 deaths from roll-overs following a tire tread-separation, pushed the Clinton administration to publish the TREAD Act. This act mandates the use of a suitable TPM technology in order to alert drivers of a severe under-inflation condition of their tires. This act affects all light motor vehicles (<10,000 lb) sold after September 1, 2007. Phase-in started in October 2005 at 20% and reaches 100% for models produced after September 2007. Whilst in the US TPMS legislation grew from safety-related motives, European Union (EU) and Far East legislators are looking at TPMS as a way of reducing CO2 emissions and are presently considering mandatory tire pressure monitoring from this environmental stance.

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How much does it cost, btw? My car Octy-2 has TPMS - but in India where I live I can't add specific features like TPMS, ESP, etc. We have to choose from 3 variants and thats about it. No add-this add-that. So I did not have to make a choice. I got heated seats which I will never use. Sad but like I said we don't have a choice. If I want a model that is without heated seats, I won't get TPMS, ESP, few airbags, sunroof and xenons which I definitely wanted.

After spending a month in Gurgaon I can't say TPM would be top of my agenda of safety items.

After spending a month in Gurgaon I can't say TPM would be top of my agenda of safety items.

City traffic is hopelessly slow and a fred flintstone's car would suffice there!

But we have no speed limits on our narrow highways/motorways. Our cars run on four wheels and a prayer ;-)