What Is The Difference Between The TireMider TM89FR and TM38FR?
Updated 09/26/2025 | Published 04/24/2025
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Question:
What is the difference between the TM89FR and TM38FR?
asked by: Patrick
Expert Reply:
Good question, Patrick!
Though the TireMinder # TM89FR and # TM38FR are very similar, there is one pretty major difference. The # TM89FR comes with standard sensors that tighten on to the valve stem and need to be removed to air up or down (see part # TM-2Brass), whereas the # TM38FR come with flow through sensors that do not need to come off to adjust air pressure (see part # TM66FR).
Other than that, they both have the same monitor, mount, batteries, tightening tool, charger, and include the signal booster. It really comes down to cost vs convenience and you will need to choose which is more important to you. Personally, I would go with the standard sensors and the # TM89FR as it is pretty easy to unscrew them to adjust the pressure and then screw them back on to check, but that's me.
What are you looking to install these on?
Product Page this Question was Asked From
TireMinder i10 TPMS for RVs and Trailers w/ Signal Booster - 4 Tire Sensors
- TPMS Sensor
- Boat Trailer
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- 5th Wheel
- Motorhome
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- 4 Sensors
- Extended Range
- Color Monitor
- Smartphone Display
- TireMinder
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Lazer S.
9/26/2025
Hey Patrick, did you decide which TireMinder sensors to go with for your installation? I'm curious to know what you chose, as it could help others make a decision between cost and convenience.