Just go to this place and get the solution that best fits your needs.https://www.tpms.com/2017-Porsche-Macan-TPMS-s/6790.htm

$110-$140 for the set of 4 will be one of the cheapest things that will eventually go bad on your wife's Macan. I see these as "wear and tear" item that will eventually need replacing.

My 2013 Cayenne GTS did not come with TPMS sensors and I wish it did as it is VERY sensitive to air pressure changes. Having worse than crappy roads and low profile tires makes for an interesting ride to say the least...

putting new tires on a Toy Hauler trailer and would like to add a full setup

I use a system from https://tsttruck.com/ on my travel trailer. The sensors I have mount on the stem. Works great and their customer service is very good.

Yes there are many valve stem cap sending units, but I want inside the tires ones.......I think.

They have different sensor styles I believe. It would make things easier to have them inside. . Topping up the tires with mine requires removal of the sensors, which is not hard, but a bit of a pain.

That's surprising since my '08 Boxster S came with TPMS. But I'm guessing it's because you're not in the US and it wasn't mandated for your country so saved some money for Porsche.

Plenty of Porsches here do have TPMS…. Guessing it was not an option the original owner selected during his buying process.

Interesting thread.

Before I put my tires on, I searched for an aftermarket TPMS that could be hardwired into the car (not through cigarette lighter or USB) and could illuminate a small light when any tire fell below minimum.

I could not find one, even though there were some good ones out there. All the ones I could find (aftermarket) had this huge display you had to stick on the dash or whatever, and plugged into the lighter or USB, so that means wires hanging around.

I finally gave up and went with using my left and right cheek to detect tire pressure problems. Not the most accurate, but cheap and integrated into the car....

D.

I have nothing at all against the new technology in cars.

The newest car I have ever owned (not counting my wife's cars) in my 1986 El Camino. It have manual door locks, and wind up manual windows. No ABS, traction control or any bells or whistles expect power steering, power brakes and a tilt steering wheel.

I bought in in 1991, and have personally put well over 350,000 miles or so. It is dirt cheap to fix and operate.

I did upgrade the dash to have instruments and not just idiot lights. And I threw out the carburetor and put on throttle body fuel injection. It runs and starts and stops and it is a vehicle that gets compliments every week.

My 85 911 I bought in 1995, and I have put over 130,000 miles on it, and driven it to 41 states and Canada. It is super reliable, and a blast to drive. I simply don't have a desire for a new car. My wife loves her Macan, and it is a heck of a car. I drive it very little.

And thanks for all the replies on the TPMS from all.

My wife somehow is very good at picking up slow leak causing stuff. The latest was a screw in her brand new Falken summer tires on the Macan. Her right rear was losing a few pounds per week, per the TPMS. I verified with my good gauge while the tires were off the vehicle over the winter. TPMS can be a pain sometimes, and surely more costly than not having it, but it works. Discount tire was great at dealing with it. It was in a spot they could patch, and they did it right. No charge when swapping over this spring.