I installed a Tireminder Trailer TPMS with a signal booster in our 320s BD. The system worked, but has several usability issues. The solar-powered reciever is terribly dim unless you plug in a USB power cable. The display angle has limited adjustment range, so the display angle won't be ideal in many installations. The reciever beeps warnings when you're out of range of the trailer and it's fussy to shut off the reciever when it's glued to a far corner of your windshield. Ours now won't run via solar power, so I'd have to power it via its USB port.
I got a Tymate TM5 TPMS to replace it. It's 1/3 the price of the Tireminder. There is no solar power so you have a cable to deal with, but the display, while small, is larger and much brighter. Tymate makes a signal booster you can buy if needed, but I didn't need it with our small trailer. It comes with a small articulating suction mount that offers a lot more mounting options. I mounted this one up in the tinted area next to our rear view mirror...something you can't do with a solar powered device. Drawbacks to the Tymate include a dedicated USB-C cord with 12v accessory plug. You need to be wary and never plug that cord into another device since there's no voltage control built in. You can power the receiver via another USB-C cord but only if that's plugged into a smart adapter that will deliver enough current. An Anker adapter I have in my TV doesn't work. One plus I didn't mention is the pressure caps from Tymate are smaller and a few grams lighter.
Both the Tireminder and Tymate are designed to handle four wheels, so you'll end up with two of the four tire indicators blinking all the time. It would be nice to have an option to disable unused indicators or have a smaller display for just two wheels like you can find for motorcycles.
Utah-based
2023 T@B 320 S Boondock
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2025 KZ Sportsmen 130RD
2023 Ford Maverick XLT
The Finger Lakes of New York
John, Northern California
https://www.amazon.com/TireTraker-TT-500-Wheel-Monitoring-System/dp/B019ZXQC18
(Alde: 3020; Refrig: Isotherm Cruise 65 Eleg; Battery: BB 100Ah LiFePO4; Solar: Renogy 220W Portable Suitcase w/ Victron SmartSolar MPPT 75/15 Controller; Victron BMV-712 Battery Monitor w/ Shunt; Pwr Cntr: PD-4135KW2B; EMS: PI-HW30C)
Greg & Marlene (Tucson, AZ)