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Discussion Starter #1
So one thing I really don't like is that my Cayman S doesn't have any kind of Tyre Pressure monitoring system ... this has meant I actually got a flat tyre at one point and only found out when a taxi driver rolled his window down and told me! Could not tell at low speeds really at all until it was fully fully flat!

What are my options for either retro fitting, using a third party thing or well anything! I now get nervous I'll get a flat again and drive through it and ruin an alloy wheel or worse!!!
 

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Interesting.. TPM systems are mandatory in the US... I’m sure the car has the capability and just needs senders in each wheel and a dealer to turn on the electronics in the car computers.. ??
 

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Interesting.. TPM systems are mandatory in the US... I’m sure the car has the capability and just needs senders in each wheel and a dealer to turn on the electronics in the car computers.. ??
IIRC it only became mandatory for 2007. It was optional on an 06 S, so it may not have the sensors.


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IIRC it only became mandatory for 2007. It was optional on an 06 S, so it may not have the sensors.


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OP has a 981.
 

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OP has a 981.
Thanks. Tapatalk doesn’t show that, or his location, so I guessed at 987 and the UK.

Oops. Now I note it’s in the 981 DIY forum, too.


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So the 981 series didn't come with TPMS in the UK?
 

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There is something that is called a tire gauge. You hold in in your hand and press it on the valve stem after removing the cap. It gives a quick and accurate measurement of your tire pressure. True, it won't help you if are unlucky enough to pick up a nail on your drive and have a tire loose enough air while driving. But it is an option

Although they are mandatory on new cars in the US, not sure how that is enforced once you own a car. I am thinking of going without on a new set of winter tires/rims. My annual state inspection is in the summer, when I'll have the original summer set with TPMS, but I don't now if they check, unless it would show up on the OBD read out.
 

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There is something that is called a tire gauge. You hold in in your hand and press it on the valve stem after removing the cap. It gives a quick and accurate measurement of your tire pressure. True, it won't help you if are unlucky enough to pick up a nail on your drive and have a tire loose enough air while driving. But it is an option

Although they are mandatory on new cars in the US, not sure how that is enforced once you own a car. I am thinking of going without on a new set of winter tires/rims. My annual state inspection is in the summer, when I'll have the original summer set with TPMS, but I don't now if they check, unless it would show up on the OBD read out.
How did we ever survive for the last 80 years without electronic gadgets to tell us what our tire pressure was? Remember when checking this stuff along with oil level was a routine thing done at each fill up with gas? Of course as you stated this wouldn't be of much help if the flat accrued while driving so there is benefit to the modern methods.

Seriously though, being from the US where this is mandatory, I had no idea that the pressure monitoring was not standard on all Porsche cars.
 

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Discussion Starter #10
There is something that is called a tire gauge. You hold in in your hand and press it on the valve stem after removing the cap. It gives a quick and accurate measurement of your tire pressure. True, it won't help you if are unlucky enough to pick up a nail on your drive and have a tire loose enough air while driving. But it is an option

Although they are mandatory on new cars in the US, not sure how that is enforced once you own a car. I am thinking of going without on a new set of winter tires/rims. My annual state inspection is in the summer, when I'll have the original summer set with TPMS, but I don't now if they check, unless it would show up on the OBD read out.
The nail in tyre thing literally happened to me, so don't want to risk that again when say I go on the Motorway and then I get a flat then!

Cheers for the replies all!

Checked out the aftermarket ones you guys said, seem to do the job although feel they may look ugly on the actual wheels!

was somehow hoping there'd be an official aftermarket fitment option but seems this is not avail or stupidly expensive!
 

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Search for "Mobiltron" -- available in the UK. They have an in-tire based system. I used their motorcycle system, it's quite satisfactory. They also make all sorts for cars, trucks, etc. Not expensive, and quite reliable.
 

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Search for "Mobiltron" -- available in the UK. They have an in-tire based system. I used their motorcycle system, it's quite satisfactory. They also make all sorts for cars, trucks, etc. Not expensive, and quite reliable.
You can buy and install sensors on the wheels all day long but if you don't have software in you cars computer to read what the sensors are sending out you are waisting your money. On my US 14/981 Base model the lower right arm on the steering wheel stack that switches the dash readouts between various functions like oil level, mpg, engine & oil temp etc., etc has a readout for the four tires and their pressures. I doubt you have it. Yes, no?
 

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I would be willing to bet all the hardware is there and a dealer can turn that feature on in the ECU with PIWIS. It would be worth a call.
 

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I would be willing to bet all the hardware is there and a dealer can turn that feature on in the ECU with PIWIS. It would be worth a call.
I'd be willing to bet that none of the necessary hardware or wiring is there.

Porsche builds "bespoke" cars - they are built to order, and part of that is making a wiring harness that only contains wiring for options selected by the purchaser. There are very few exceptions to this. The wiring harnesses are now built by computer controlled machinery so there is no benefit to Porsche to install wiring and connectors for items that aren't going on the car - no profit in doing that. The TPMS also requires an antenna module in each wheel well - these are not inexpensive and it would be a waste of time installing them if the car wasn't ordered with TPMS.

About the only thing I've ever seen that's been "prewired" for in a Porsche is in the Cayenne SUV. Certain models were available with an optional CD-changer mounted in the rear. It seems Porsche anticipated enough owners wanting to add one that in the early series it was prewired for the changer. Porsche-AG is not interested in having dealers installing upgrades to their cars that Porsche-AG could charge absurd prices for as part of the original build.

Gotta remember - Porsche wants to sell cars (at a great profit) - that's their ultimate goal. The ultimate profit machine..
 

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I would be willing to bet all the hardware is there and a dealer can turn that feature on in the ECU with PIWIS. It would be worth a call.
I'd be willing to bet that none of the necessary hardware or wiring is there.

Porsche builds "bespoke" cars - they are built to order, and part of that is making a wiring harness that only contains wiring for options selected by the purchaser. There are very few exceptions to this. The wiring harnesses are now built by computer controlled machinery so there is no benefit to Porsche to install wiring and connectors for items that aren't going on the car - no profit in doing that. The TPMS also requires an antenna module in each wheel well - these are not inexpensive and it would be a waste of time installing them if the car wasn't ordered with TPMS.

About the only thing I've ever seen that's been "prewired" for in a Porsche is in the Cayenne SUV. Certain models were available with an optional CD-changer mounted in the rear. It seems Porsche anticipated enough owners wanting to add one that in the early series it was prewired for the changer. Porsche-AG is not interested in having dealers installing upgrades to their cars that Porsche-AG could charge absurd prices for as part of the original build.

Gotta remember - Porsche wants to sell cars (at a great profit) - that's their ultimate goal. The ultimate profit machine..
I too believe that this is the case, they install only what was originally ordered, nothing for free...

I checked the ability to add various features after I took delivery of my new cars, learning very quickly that if you are specifying a build make sure that the option box is checked because adding "it" later is either very expensive or nearly impossible!
 

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I'd be willing to bet that none of the necessary hardware or wiring is there.

Porsche builds "bespoke" cars - they are built to order, and part of that is making a wiring harness that only contains wiring for options selected by the purchaser. There are very few exceptions to this. The wiring harnesses are now built by computer controlled machinery so there is no benefit to Porsche to install wiring and connectors for items that aren't going on the car - no profit in doing that. The TPMS also requires an antenna module in each wheel well - these are not inexpensive and it would be a waste of time installing them if the car wasn't ordered with TPMS.

About the only thing I've ever seen that's been "prewired" for in a Porsche is in the Cayenne SUV. Certain models were available with an optional CD-changer mounted in the rear. It seems Porsche anticipated enough owners wanting to add one that in the early series it was prewired for the changer. Porsche-AG is not interested in having dealers installing upgrades to their cars that Porsche-AG could charge absurd prices for as part of the original build.

Gotta remember - Porsche wants to sell cars (at a great profit) - that's their ultimate goal. The ultimate profit machine..
The one major exception to this is the Sport Exhaust. They did wire in a connector on all of the engine harnesses to control the solenoid for the valved portion of it. The same, of course, cannot be said for the body harness, as anyone who's installed it DIY knows that you have to run a wire from under the driver's seat to the back of the car.

But I do agree with you, if the car didn't come with TPMS, I highly doubt adding it in an OEM way is feasible. That said, wtf is Porsche thinking building cars without TPMS these days? It's a proven safety measure. What market is this that they would omit it?
 

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The one major exception to this is the Sport Exhaust. They did wire in a connector on all of the engine harnesses to control the solenoid for the valved portion of it. The same, of course, cannot be said for the body harness, as anyone who's installed it DIY knows that you have to run a wire from under the driver's seat to the back of the car.

But I do agree with you, if the car didn't come with TPMS, I highly doubt adding it in an OEM way is feasible. That said, wtf is Porsche thinking building cars without TPMS these days? It's a proven safety measure. What market is this that they would omit it?
Transport Canada disagrees with you about it being a proven safety measure. TPMS is not mandatory in Canada, although it is standard on all Porsche models sold here. Probably cheaper for them to ship one NA standard here instead of having 10% being different.


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Transport Canada disagrees with you about it being a proven safety measure. TPMS is not mandatory in Canada, although it is standard on all Porsche models sold here. Probably cheaper for them to ship one NA standard here instead of having 10% being different.


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Well, it has personally saved me from several issues.
 
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