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One destroyed tire (and wheel well) at speed will have you installing TPMS. My one experience on a boat trailer was enough - fun though - my wife who was driving at the time - freaked out - at 70 mph... TPMS she said YES.

Mike's post reminded me. Our tpms adds weight to the stem. If you add a tpms, you may (at least slightly) change the balance of your tires.

I don’t know if they were balanced when I picked up my trailer. I did have them balanced within a few months with added metal stems and TST TPMS sensors. Just had new tires installed and did the same - balanced with TPMS sensors mounted. Mike

I think that this has been mentioned before - but - if you are ordering a TPMS then strongly consider getting six (6) sensors, or, if your tow vehicle does not already have a TPMS you should get ten (10) sensors. Rarely (if ever) does the tow vehicle spare tire have a pressure sensor on it and they are usually difficult to get to. Then, of course, you will need four (4) more for the Ollie II and the last of the six would be used for the spare tire on the Ollie. Bill

Although my TPMS sensors were marked at the time of the original installation, if I install them one at a time, the monitor shows the location of the sensor I just installed. Then I could mark them using dewdev’s labeling method or move them to the correct tire if they are already marked. Or you can clear the monitor memory and reprogram the system. Mossey

TST supplied little stickers and, like Bill, I have stickers on each monitor so I know which one goes where. Actually, I’ve never had them all off at once. If your TPMS is telling you that one tire is low, I would remove the sensor and check with a gauge then fill if necessary. I carry a small tire compressor I got at Lowes a few years ago. It doesn’t fill fast but is good for “top offs” when necessary. Mike

I have placed a small number (1-5) on the inside of each of my tire sensors and then coated these numbers with clear nail polish so that the number stays put and does not wear off or come off. I then marked in my TPMS owner's manual which tire went with which numbered sensor. This way it is easy to get the right sensor back on the right tire in the event of removal. Bill p.s. if you'd like a picture of this just let me know.

Super description - thanks! Will be attempting this next week. Quick question...have you noticed any problems with your Ford TPMS? I have heard reports of the added USB/12V plugs in this area causing problems with Ford's TPMS. I am guessing use of a ferrite choke on the power line would help mitigate this potential issue as well? Thanks again for doing almost all the work for me 😀

Mark - In reverse order - I agree with Seadawg and David - TPMS is virtually a must. Obviously, there are several good systems on the market and Ford's just might be one of them. I certainly understand wanting to reduce the number of separate systems and/or screens in the tow vehicle (both for the TPMS and for the backup camera) and I don't know what Ford's system costs. However, I'm guessing that for what Ford will want for its system, you can get a very nice TPMS (note here that if you go this route you should think about getting 6 sensors which will take care of the four wheels on the Oliver plus the spares on both the tow vehicle and the Oliver). In ordering my Oliver I thought that the camera being sold by Oliver was expensive AND I wanted to reduce the number of screens inside my truck. Bottom line is that I had Oliver pre-wire for the camera during the build to include an on/off switch by the camper entrance. As with all other things that they have done for me the result was very professional and complete. Heck - at delivery, they even installed the camera for me. While hardwired into the electrical system of the Oliver, the camera does transmit it video signal to the tow vehicle via WiFi. This has never been a problem and I can view that transmission on my tablet or my phone (or both). Since I usually have one or both of these operating as I drive anyway, there is no additional screen. And, I can have it on or off any time I chose. My total cost including the camera, WiFi transmitter and Oliver install was right at $250 (note that this was a bit over four years ago). Again, I'm guessing that Ford's system will be somewhat more expensive than this and if you ever change tow vehicles you might have a problem. Bill

Most - if not all - the current models of dashcams have multiple ways of getting to the video files. This has never been an issue with any of the cameras I've been interested in. Also, I too have a TPMS, Garmin 890 (and the truck's navigation system), cell phone, dashcam, rearview camera screen, radar detector, and laptop - all in that central area of the truck. I have never experienced ANY issues with any of these devices interfering with anything. Bill

I certainly now see the advantage of a dash cam after reading about Questionmark's accident. But I do have some concern with all the gadgets I now have and adding a dash cam all with their monitoring display near each other in the TV cab. The devices will include: (1) Garmin 890 RV GPS, (2) Ollie's rear view camera monitoring display, (3) TPMS monitoring display, (4) cell phone and (5) now a dash cam. I remember reading in the TTPS manual about interferance of their monitoring display if near other similiar devices. Will they all work properly in the cab together? Do they need to be located in seperate areas of the cab? I would appreciate others opinions and experience with multiple system running concurrently. Thanks

Going on six years, and no issues with my TireTraker sensors, they do hit the rims, just like that top picture, it never bothered me any. I worry a whole lot more about busting off a steel TPMS stem on my Land Cruiser. John Davies Spokane WA

For anyone with another brand of TPMS other than TireTraker, do the operating instructions have the same “recommendation” for metal valve stems?

Yeah, that’s the recommended solution posted on the other forums, or going with the internal sensors inside the tire. Either way, a significant bit of cost and downtime to upgrade all 4 wheels. Very mixed feelings at the moment about continuing to use the sensors with the rubber valve stems and risking catastrophic rapid leak(s) if one or more of the valve stems fail, or removing the sensors and going without the TPMS system for now and risking an unmonitored tire leak. TireTraker manual does say metal stems are “recommended” but not required.

But, if they gave you tpms stems with the truck, as they sometimes do, you are golden. I know a lot of newer trucks have the option to install tpms monitors in/on the trailer tires, so it is integrated with the truck system. We'll see what yours has, eventually. It's also unlikely that you will suffer a flat on the trailer in the first 1000 miles. In the meantime, as I said, chill. You have enough to finish at your current home.

We are putting in a TPMS, TST 507 on our Ollie. Did anyone replace the Ollie rubber tire valve stems with brass valve stems for this system? One vendor says it is best to use brass valve stems.

Our delivery date is November 7 so we're looking at options now. I plan on getting the back-up camera option that can be on for rearview observation while driving. I did get a TST tpms to monitor the tire pressures and temperature. My cockpit might start looking like a Boeing 777 before long.

Planning to replace the stock clad lug nuts with solid chromed ones when we install our TPMS. Are there 5 lug nuts per wheel?

Here is a pic of the TPMS display in the cab. Can't figure out why it keeps posting sideways. Here are a couple other pics of the trailering software in the cab.

Did this "require some assembly" at Oliver TT? I believe my 2500 has the same TPMS, and I was hoping it would connect to the TT, but my salesman (who admits he knows nothing about trailers and towing) didn't think it would. My truck delivered a few days ago, I'm trying to absorb all this new info before I hit the road for Oliver delivery (3/28).

The cable passes behind the spare cover and just comes out through the top. It works well as a backup camera as long as you go slow and steady. I still like to get out and check things if I don't have a spotter. The big benefit is not having to have another screen in the vehicle. Not sure what trim level you have but my truck also came with TPMS sensors for the trailer that link right to the trucks infotainment screen which also make for one less device. John, There is no disconnect on the camera but there is plenty of spare cable to set the cover aside. John

I agree with topgun2, I've used the EezTire E518 TPMS now for about 2 years. Sits in the cup holder just fine and the Ascent has soo many cup holders, but I can understand why one might want to make it more OEM.

How are the brakes, are they working properly yet? Have you tried a really hard stop? Got TPMS? I am glad this has worked out so well, but you should slow down. A tire failure on a single axle trailer at 75 mph is going to be horrendous. Have you considered an OBD2 monitor so you can see what is happening inside the engine, CVT and alternator? https://www.scangauge.com/x-gauge-commands/2019-subaru-ascent/ How is the trailer charging, is that working? Does Reset have lithiums? I have owned a couple of older Roos and I would be extra extra cautious about your engine and drivetrain durability, be very aggressive about fluid changes and I suggest full synthetics, if the Subaru OEM ones are not that type. My sister tows a 1200 pound braked teardrop trailer with a 2015 Forester CVT, without paddle shifters. I am waiting for a report that she has crashed going down some steep Oregon grade. Do you use yours at all? How well do they help? Is there a Tow/ Haul setting? Subaru trannies are fairly reliable, better than the old automatics, but they are not repairable, they have to be replaced. And out of warranty that is going to be $$$: https://www.subaruforester.org/threads/2015-transmission-cvt-failure-report.808670/ Sorry for all the questions, you are a pioneer here, I think, with your Subaru. Please post pictures! I fixed the one you posted earlier. Thanks. John Davies Spokane WA

WIll get pictures when I pull the footwell dash parts again to run the TPMS display wires in the next week or so. I just posted the initial towing report to the "Towing and Oliver" thread - don't have all the weights I wanted but will add those in as I collect them.

We had a catastrophic brake failure on one wheel of our fifth wheel. A spring broke and part of the auto adjust mechanism fell inside the drum, leading to further parts thrashing around inside the drum as we drove. My first indication was unusually high temperature in that tire, reported by my TPMS.