TPMS?

I have a cheap one similar to those advertised for $99.00 these days.
It has a very slow update rate which is fine for knowing you dont have a very slow leak but not so good if you get a faster deflation.
Also check the sensor battery life, I have the valve stem sensors that I was a bit wary of having the extra weight swinging off the stem but that doesnt seem to be a problem but the 1632 batteries only last 4 or 5 months, that would be a problem if they were internal sensors.

I have the InnotechRV 10 Sensor Tyre Pressure Monitoring System which I purchased back in 2014.

With 10 sensors I can monitor all 8 road tyres plus the 2 spares.

Not the cheapest but does work fine without the need to add a repeater.

We've been using the wireless ProMata system for about 6 years now. Plus for us is it doesn't need a range extender to talk to the sensors on the camper, as well the remote head is solar powered and works a treat.

Rob

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I have had several over the years which have saved me from destroying several tyres.
There are many choices of display types, some simple and some cluttered.
My final set on the Troopy was 'Mata C' by Promata. Designed for 4WD use, this simple model will only serve 4 tyres but is simple to install by inserting into a cigar-lighter socket. Another big feature is the ease of changing tyre pressure for varying track conditions.... it is done to all tyres at the same time by simply pressing a button after changing the pressure. And it will monitor pressures from 0 to 99 PSI.
I now have two sets of the Mata C, in the Sprinter and in the Aurion home car.

I've got a Safety Dave unit, which is very popular in some quarters. Seems to work well. I haven't had a flat tyre in order to test it fully yet (perhaps I shouldn't have said that), but when I forget to reset the alarm settings after airing down it's been quick to tell me.

These units aren't super precise in my experience, so you wouldn't use them to fine-tune tyre pressures, but they're close enough for general monitoring, and the alarms seem to work, which is what I got it for.

I use a Masten unit from digOptions. Display is small and clear, and it has been fine for 3 years …. Batteries still going.

Cheers
Jim

I have had SensaTyre internal tyre monitors for over 15 years. They are strapped to the centre of the wheel rim before mounting the tyre. They give very accurate tyre temps which is more important than the pressure. They will also alert you to failing wheel bearings and dragging brakes or hand brake. Keeping your tyre temps under 50 degrees will enhance their life and be safer. As your vehicle is loaded to near its GVM knowing and monitoring your tyre temps becomes more critical.

I have had the Safety Dave TPMS for several years now.

It has saved me a tyre on two occasions when I had a slow leak and noticed the tyre pressure slowly falling.
On a third occasion it gave me a high temperature alarm and we stopped immediately to investigate. A bearing, or the brake assembly, in my camper trailer had completely collapsed and cooked itself. There were very few rollers left in the bearings, the shoes had no lining left on them and the brake magnet had melted. This incident had occurred after about 40 minutes of driving after a long break at Borroloola and we were heading towards Lorella Springs.
There was no damage to the tyre.

I have a couple of thoughts about the unit and senders;

I never use the grub screws and have not yet lost a sensor off a valve stem nor have I had one damaged. We have unfortunately left one at a service station and when we remembered, on return we found it had been run over, We left one other on the side of the road when dropping tyre pressures for a gravel road. Each of us had thought the other had replaced them on both occasions. Replacements were express posted to us the same day we contacted them. Safety Dave’s warranty and after sales service is excellent.

The display screen is large enough to read from the other side of the dash board - we mount it there so my wife can easily monitor it and I am not distracted by it. I find it VERY suitable. If there is an issue then it instantly displays which tyre is affected with the pressure and temperature display.

The unit is adjustable over a very large range of pressure and temperature and you can set the limits that suit you and you can buy as many tyre sensors as you have wheels (up to 18 I think).

The lithium button batteries are very easy to replace and I just carefully nip up the caps with multigrip pliers.

Regarding pressure accuracy I set my pressures pretty carefully with both my deflator and another analogue gauge that I have. Often the display shows a 1 or 2psi difference between tyres and my thoughts are that, if your target pressure is say 40psi, and one tyre shows 39 and another 41 then how can one know whether it is say 39.0 or 39.9 and 41.1 or 41.9. To me an indicated 2psi difference is neither here nor there. You can get more than that variation if the sun is on one side of the car.

I think they are a very simple and capable TPMS.

I have Tyre Dogs . The alarm allowed me enough time to find a wide shoulder on a motorway to pull over, tyre saved. If long valve stems are a concern with the sensor hanging out or centrifugal force bending long stems then use 20mm motorcycle stems.

Cheers,
Peter
OKA196 motorhome

Great info and advice everyone, thanks you.

I hadn't considered tyre temps, I was only thinking of staked tyres.

I'm looking into a TPMS mostly for when I do remote trips. When I do remote trips, my tyres are deflated which is when they will get hotter than normal.

I've been just thinking of monitoring pressure, but temperature is just as vital.

Do most TPMS's have temperature monitors?

If anyone is currently looking for a TPMS and interested in the Promata products, just noticed that Promata Au (Carmate Electronics pty Ltd ) is having an EOFY sale 20% off sale. Ends 30 June. Code is PROMATA20

Promata EOFY sale