1. TPMS Sensor
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  4. Mounts to Valve Stems
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TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors

TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors

Item # TST-507-FT-4-C
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TPMS Sensor
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TPMS monitors RV tire pressure and temperature and sends updated info to wireless color monitor every 5 minutes. Flow through design lets you inflate tires without removing sensors from valve stems. Presets let you monitor up to 4 separate vehicles. Lowest Prices for the best tpms sensor from TST. TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors part number TST-507-FT-4-C can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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TST TPMS Sensor - TST-507-FT-4-C

  • 4 Sensors
  • TST
  • Mounts to Valve Stems
  • RV
  • Trailer
  • Flow Through Sensors
  • Monitor Display

TPMS monitors RV tire pressure and temperature and sends updated info to wireless color monitor every 5 minutes. Flow through design lets you inflate tires without removing sensors from valve stems. Presets let you monitor up to 4 separate vehicles.


  • TPMS lets you monitor your RV's tire pressure and temperature via included monitor
    • Also works great with your motorhome, 5th wheel, motor coach, or trailer
  • Full-color, wide-screen monitor provides early warning detection with visual and audible alerts
    • Detects blowouts, significant pressure changes, and tire temperatures exceeding 158 degrees
    • Refreshes automatically with new tire information every 5 minutes
    • Presets let you monitor up to 4 separate vehicles or orientations
  • 4 Flow through sensors check tire pressure and temperature every 12 seconds
    • Flow through design allows tires to be inflated or deflated without removing the sensors
    • Brass construction designed for use on steel, chrome, or nickel valve stems
    • Easy installation onto your tires' valve stems
    • Theft-resistant covers require use of included cap wrench for removal
    • Additional sensors (sold separately) let you monitor up to 38 tires
  • Multiple mounts allow optimal monitor positioning
    • Easy-to-use suction cup mount lets you stick monitor to windshield or dashboard
    • Non-slip, rubber cradle mount lets you set monitor on dashboard
  • Micro USB cable and adapter let you charge monitor with your vehicle's 12-volt accessory outlet
  • Booster strengthens sensor signal and eliminates electronic interference


  • Tire sensors:
    • Dimensions: 1" diameter x 7/8" tall x 2-1/8" long
    • Pressure range: 0 psi - 196 psi
    • Operating frequency: 433.92 MHz
    • Operating temperature range: -40 F - 176 F (-40 C - 80 C)
    • Storage temperature range: -40 F - 185 F (-40 C - 85 C)
    • Battery life: 12 months - 18 months
  • Monitor:
    • Overall dimensions: 3" tall x 4-1/2" wide x 1" deep
    • Screen dimensions: 1-5/8" tall x 3-1/4" wide
    • Battery life: 5 days - 7 days on a full charge
    • Battery recharge time: 4 hours
  • Booster dimensions: 2-1/2" tall x 3" wide x 5/8" deep
  • Booster lead wire length: 57"
  • Monitoring capacity with included sensors: 4 tires
  • 3-Year limited warranty


This TST tire pressure monitoring system monitors the pressure and temperature level of the tires on your RV, motorhome, 5th wheel, motor coach, or trailer. The system utilizes flow through sensors that attach to the valve stems of your tires. The flow through design lets you inflate or deflate your tires without removing the sensors. When a tire sensor detects an anomaly, it will wirelessly transmit an alert to the included digital color monitor. Your monitor will emit flashing lights and an audible alert to notify you of an issue, and it will display details regarding the anomaly. A booster is included to strengthen and amplify the signal that the sensors are sending to the display monitor.

Initial Setup

The TST TPMS is easy to set up and includes all mounting hardware and tools for installation. First, assign the tire sensor positions through the monitor's Learning Mode. Label each sensor with the corresponding numbering code sticker so that you know which sensor is programmed to which tire position. When you are setting up the sensors make sure the one you are programming is at least 2' away from the other sensors. Otherwise the other sensors will interfere with the sensor you are attempting to program. Once the tire sensors have been recognized by the monitor, attach them to the valve stems of your vehicle's tires. Next, install the booster and connect it to a 12-volt power source on your vehicle or trailer.


Use the included suction cup holder to mount the color monitor on your windshield so you can monitor your tires while you drive. You can also use the included rubber, non-slip cradle mount to set the monitor on your dashboard.

TST Color Monitor Display

App Diagram

  1. Current Tire Selection - The tire icons indicate the position of your tires. A solid tire icon indicates that tire is programmed into your current setup. A blinking tire icon indicates that tire is experiencing an anomaly.
  2. Sensor Low Battery Alert - This displays when one of the sensor's batteries is low. The corresponding tire light will also flash to indicate which sensor's battery is affected.
  3. Display Battery Level Indicator - Shows the charged level of the internal battery. When this icon shows one bar it is recommended to charge the display as soon as possible. It takes approximately 4 hours for the battery to fully charge.
  4. Out Of Parameter Alert - This icon will flash during a high or low pressure alert, a high temperature alert, or a fast leak alert. In conjunction with this flashing light, the affected tire light will flash, the HI or LO PRESSURE, HI TEMP, or FAST LEAK indicators will light up, and an audible alert will sound.
  5. Display Alerts - These icons, along with the specific tire icon, will light up to indicate HI or LO PRESSURE, HI TEMP, or FAST LEAK. The bottom row indicates which programming mode you are in.
  6. Red LED Indicator - Lights up during an alert.
  7. Antenna - The multidirectional antenna helps eliminate electronic interference when paired with the signal booster.
  8. Temperature Indicator - Displays the current temperature of the selected tire in Fahrenheit or Celsius. This will also display your selected high temperature parameter during programming.
  9. Tire Pressure Indicator - Displays the current tire pressure of the selected tire. This will also display your selected high and low pressure parameters during programming.
  10. Power Switch - Lets you turn the monitor on and off.
  11. Charging Port - Plug the included USB cable into this port to charge the monitor. The side power switch will not turn off the display when constant power is applied to the unit.
  12. Backlight and Motion Detector - The backlight turns on when the vehicle is in motion, and there is little ambient light. It will sense periods of inaction and the display will "go to sleep" until the vehicle resumes motion.

TST Color Monitor Function Buttons

App Diagram

  1. GO Button - Press the GO button to tell the system where to "go". When pairing the sensors, once you have the tire icon flashing that you want to code, hit the GO button to tell it to get its unique code. If you only want to code a trailer, press the GO button to tell it to go to the trailer. When moving from axle to axle to set your warning pressures, hit the GO button to go to the next axle or next trailer.
  2. SET Button - Press the SET button to program your warning parameters, or to go into coding and set your configurations. This button locks in all specific settings.
  3. BACK Button - Press the BACK button to leave programming, or take the system back to the previous screen. If you need to remove a sensor code, use this button in the coding section to take the sensor position back to the factory settings.
  4. + Button - Press the + button to increase the temperature and pressure settings from the factory defaults. You can also scroll forward through your tires. Press the + button in conjunction with the GO button to drop your towing vehicle from a setting and add it back in.
  5. - Button - Press the - button to decrease the temperature and pressure settings from the factory defaults. You can also scroll backward through your tires. Press the - button in conjunction with the GO button to drop your towed vehicle from a setting and add it back in.

Multiple Wheel Layouts


You can program multiple layouts into the monitor, and you can scroll through each setup on the screen. This system can support up to 4 tire layouts and up to 38 tires total. Make sure to set your high and low pressure alarms for each layout that you are using. Some examples of popular layouts are shown above.

Tire Sensor Installation

Tire sensor Install Diagram

  1. Screw the anti-theft hex nut onto your tire's valve stem threads until it bottoms out.
  2. Screw the sensor onto the valve stem. Tighten the sensor until the air stops leaking and the sensor bottoms out on the valve stem. Give it a slight twist to seat the sensor while being careful not to over-tighten.
  3. Use the included wrench to tighten the hex nut counterclockwise until it is snug against the sensor.
  4. Screw the tire's valve cap onto the sensor.

Note: To inflate or deflate a tire it is not necessary remove the sensor. Simply unscrew the cap.



The booster - or repeater - amplifies the signal strength that the sensors send to the monitor. Booster installation requires a 12-volt power source. It is waterproof and can be mounted inside or outside your vehicle with the included mounting hardware. On a trailer, you can mount it in the battery box in front of the propane bottles. On a 5th wheel, you can install it in the house battery bay underneath the overhang. You will want to place it below the bank of mirrors so they don't bounce the signal back and cause the system to malfunction. On coaches with towed vehicles, you can install it in the back battery bay. The power draw is so minimal that you can leave the booster installed without running the battery down. If you decide to unhook it for storage remember to reconnect when you are ready to hit the road. A red light on the repeater indicates that the unit is connected to power and operating correctly.

TST-507-FT-4-C Truck System Technologies RV Tire Pressure Monitoring System w/ Color Display - Repeater - 4 Flow Through Transmitters

Installation Details TST-507-FT-4-C Installation instructions

Customer Reviews

TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors - TST-507-FT-4-C

Average Customer Rating:  4.4 out of 5 stars   (32 Customer Reviews)

TPMS monitors RV tire pressure and temperature and sends updated info to wireless color monitor every 5 minutes. Flow through design lets you inflate tires without removing sensors from valve stems. Presets let you monitor up to 4 separate vehicles.

- TST-507-FT-4-C

Find a good video and watch it closely, maybe several times. Installation wasn't too bad. Love the silicone stand that comes with the unit, brilliant idea! Placed it in far left corner of windshield so it doesn't block the view but is easy to see (and hear).

- TST-507-FT-4-C

Excellent product. I have a one axle trailer so knowing early when a tire is having a problem is critical. This monitor was easy to set up and has worked perfectly. I did not need to use the extension antenna...it reaches the cab of my truck no problem. Continues reading on temp and pressure. I went on a cross country trip and this product was well worth the money.

Great Product , over a year and several more trips. Had one alert when tire temp went above my set parameters.
Todd - 02/25/2021

- TST-507-FT-4-C

I bought a TST TPMS based largely on all the positive reviews. Easy to read colour screen. I like the flow through sensors. At first I thought they may have looked like big gobs hanging off the valve stems but it isn't all that bad. Shipping was slower than normal because package was held up for days at customs which was out of everyone's control so it was not etrailer's fault shipping was slowed this time.

- TST-507-FT-4-C

Great product for keeping tabs on your trailer tire pressure and temperature. Also bought metal valve stems for better support of the sensor weight.

- TST-507-FT-4-C

Have had these for a year now and they work great. The only reason I didn’t give 5 stars is because one of the flow through sensors had rough threads and is very hard to get started onto the valve stem. I never have any connection issues on my 38 ft 5th wheel with the booster installed.

- TST-507-FT-4-C

On a long trip there's nothing better than the peace of mind knowing the condition of all my trailer tires. Even if one developed a slow leak, I would know right away before it went flat and caused major damage.

- TST-507-FT-4-C

The system( 4 flow through valves) has worked great for a year and approximately 7000 miles. We have it on a two axle 28 foot toy hauler with 10 ply tires. It warned us of a tire failure due to a sharp rock puncture while traveling on a gravel road and prevented any damage to the RV or wheel. I set the high pressure warning 16 psi above recommended tire pressure of 80 psi and on a 100 degree F day it sometimes sounds the alarm on one or both tires that are on the sun side of the RV. The tire pressure has never gone past 16 psi above set pressure. The color display is hard to see in the bright sun when placed on top of the dash board. This device has given me great peace of mind while traveling.

- TST-507-FT-4-C

We are so happy with theTST tire pressure monitoring system we bought for our fifth wheel! We use it every time we travel and go camping, and it has not failed to work as promised. In fact, we were getting ready to leave on a week-long camping trip a couple of days after I had installed this system (which is really easy to do), and on the morning of our departure as I pulled our camper out of its port, the TPMS audible alarm went off! I had checked our tire pressures the night before, but somehow a screw had become lodged in the sidewall of one of our tires and I guess moving it caused it to lose air pressure. I would never have caught this without the TST TPMS system—at least not until we were on the road! So, yes, I highly recommend this great addition for safety and peace of mind while traveling!

- TST-507-FT-4-C

Just installed. Easy process. Sensors reading within 15 minutes. Am using the booster. The manual makes no mention of the inline fuse. Haven’t traveled with it yet. Seems like it will work well. etrailer price was $200 less than in store at service center.

- TST-507-FT-4-C

Works perfectly so far. The extender was necessary to reach my 5th wheel tires, but I had no problem fastening to the inside wall of the battery compartment. Really provides peace of mind on the road.

- TST-507-FT-4-C

Great product. Great comfort in knowing how your tires are doing in real time.

- TST-507-FT-4-C

The installation was fast and easy. The TPMS sensors are inaccurate and constantly send false information. I set all the tires at the same air pressure. While traveling I noticed several of the sensors sent readings that showed higher air pressure and higher temperatures. I pulled over and rechecked the pressures with my air gauge. all tires were at the proper pressure. The sensors are very inaccurate.

- TST-507-FT-4-C

Good product altogether. Easy to setup and get running. Once setup it synchronized with the trailer tires within a few minutes. My truck already has TPMS, and I'm wondering if I can get it to synch with the TPMS monitors that are already in place in the truck.

Works well, occasionally one sensor s out temporarily.
Matt C - 05/29/2020

- TST-507-FT-4-C

So far so good, came right on time, video easier to understand than the directions, but not bad at all to install. Peace of mind !

- TST-507-FT-4-C

It was not difficult at all to sync the sensors to the display. Today will be my first use of them for a camping trip. On my way to Church they all synced up without the use of the extender. I have a Outdoors RV 23KTS travel trailer, so it is not very long.

- TST-507-FT-4-C

When I bought these I didn't read the part about these required metal valve stems. I put them on and with in a 100 miles I had a tire loosing air, these TST sensors are to heavy for standard rubber valve stems. After putting the new metal stems on I haven't a minutes problem. These read out pressure as well as temperature per tire, they do alarm when pressures drop,they areare worth every penny. I do recommend these for anyone pulling an RV or boat. Also you can purchase more of the sensors

- TST-507-FT-4-C

Excellent product. Easy to set up and use. Verified accuracy with two other pressure gages. Very convenient to adjust tire pressure without removing sensor. A couple of items that could be improved: 1) The screen is hard to read in daytime conditions. 2) The monitor reads one tire at a time and takes about 10 seconds to scroll through all (4) tires. Too long to take your eyes off the road. Displaying all four tires simultaneously would be a safer option. Otherwise a very good product. I would purchase again.

- TST-507-FT-4-C

Thought I was getting inside the rim, but once delivered, perfect!

- TST-507-FT-4-C

The product box was wiped but all looks good!!

- TST-507-FT-4-C

There great, pressure reading is off a few pounds from accurate. Alarm is a great feature. Low and high pressure alarm as well. I set mine to account for the in accurate tire pressure.

- TST-507-FT-4-C

This product was hardly usable. The screen was not clearly seen in ANY hint of daylight unless you cupped hands around it to block the light which is impossible when driving. The alarms failed to alert at all when temps reached 150-160 degrees which resulted in 3 tire failures in 2100 miles (the tire guy set us up for failure too) but we bought the TPMS system to be ultimately prepared and in control for towing the large 5th wheel. The unit did show reliable inflation numbers but the temps were showing 40+ degrees cooler than the temp gun we also were using and ultimately the high temps caused the tire failures. We are getting new G rated tires and ultimately will replace the TPMS system for something reliable.

I spoke with my TST representative, who had some comments and questions. The TST TPMS reports the air temperature inside the tire cavity. There is no way to use an IR gun to read internal air temperature, thus, the customer most likely read tread temperature, which should be substantially higher dependent on ambient air temperature and road surface temperature. An overloaded tire will run much hotter - as small as a 10 overload can cause a 20° or more increase in tread temperature. Because theyre not right there looking at your tires and the system, here are some troubleshooting questions: IR Gun: Is the IR gun calibrated? Was it tested again after this to verify its accuracy? How was the gun used while driving? The rig and tires: Brand and age of the rig? Is it properly serviced? Have the bearings been serviced according to manufactures specs? Have the brakes been serviced according to manufactures specs? Were the brakes and bearings inspected after the blow outs and eliminated them as causes of heat? Has the rig been weighed? Has the rig been been weighed at each tire position after being loaded to the maximum capacity and as it was ultimately used? Was the pressure in the tires set according to the tire manufacturers data chart for the weight of the heaviest corner tire position of the rig after being loaded for use? What is the brand, rating, pressure of the original tires that blew? Were these the correct tires for this unit, do they match the manufactures recommended loadweight rating? Were they driving in extreme outdoor temperatures? Were they descending a steep grade or multiple grades? If you can get back to me with some additional information, Ill provide it to TST.
-- Etrailer Expert Mike L - 07/25/2019

- TST-507-FT-4-C

My husband orders a lot from etrailer, and is very happy with the products and service. I jut pay for what he wants! LOL!

- TST-507-FT-4-C

Bought this product for my single axle travel trailer. I use one for each tire, one on the spare, and carry a spare with me for just in case. I have an F-150 SCAB towing a 21’ TT. It usually takes about 2-4 minutes for the module to connect to the monitors On each tire, but after that the connection is solid. I have not found a need to connect the repeater, but your usage may vary.

- TST-507-FT-4-C

Just had one problem----one of the tire sensors leak air. But the service was top notch. Need some help on this sensor. T

- TST-507-FT-4-C

Just as requested

Show More Reviews

Ask the Experts about this TST TPMS Sensor

  • Recommended Tire Pressure Monitor System for Rubber Valve Stem with Brass Threads
    The TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors # TST-507-FT-4-C as our product page states is brass construction designed for use on steel, chrome, or nickel valve stems. These flow through sensors are larger and require that metal stem for support like # AM20906. The TST TPMS for RVs - Color Display - Signal Booster - 4 Tire Sensors # TST-507-RV-4-C on the other hand is brass construction designed for use on rubber, steel, chrome, or nickel valve...
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  • How to Monitor Tires on 2018 Ford F-250 with TST Tire Pressure Monitoring System for Trailer
    The TPMS on your 2018 Ford F-250 are using their own system and it won't be compatible with the TST TPMS # TST-507-FT-4-C that you are using for your trailer. If you wanted to use the TST to monitor the tires on your F-250 as well then you'll need to install some TST sensors on your truck tires. You can either use more of the Flow Through Sensors # TST-507-FT-S2 (which comes with a quantity of 2 sensors) or you could mount the Internal Sensor # TST-507-INT-S1 on all 4 wheels but this option...
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  • Recommended Tire Pressure Monitor and Flow Through Sensors For Fleet
    The TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors # TST-507-FT-4-C will allow you to monitor up to 38 tires on the single monitor. For your additional sensors you can simply use # TST-507-FT-S2 and then you can use # TST-507-R for each vehicle or trailer. If you want multiple monitors you can use the Color Monitor for TST TPMS Systems # TST-507-D-C.
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  • Does Booster of TST TPMS for RVs # TST-507-FT-4-C Have to be Installed to Function
    The signal booster of the TST TPMS for RVs # TST-507-FT-4-C is required for use and would be needed with your setup that has a 35 foot 5th wheel. The exact range isn't listed but it was designed for applications just like yours so it would work great for you. TST states that the amperage draw of the booster is so low that even if you left it connected to your RV battery it would not affect the battery life any worse than standard battery drain that occurs when left alone. I attached...
    view full answer...
  • What Battery Size Do the TST TPMS Systems Use
    Yes, the batteries on the TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors Item # TST-507-FT-4-C can be replaced with a CR1632 battery. You do not need to be moving for the sensors to be working, but the flow through stems are not compatible with rubber valve stems- only steel, chrome, or nickel valve stems. Instead you would need to use the # TST-507-RV-4-C which can be used on rubber, steel, chrome, or nickel valve stems and use CR2032 batteries.
    view full answer...
  • Is the 507 TST Tire Pressure Monitoring System for RVs Available with a Grayscale Monitor
    Yes, we have the TST TPMS for RVs # TST-507-FT-4-C available with the grayscale display listed as part # TST-507-FT-4 on our site. This includes the signal booster and the 4 flow through tire sensors as well.
    view full answer...
  • Recommended TST TPMS System for 30 Foot Trailer and 2019 Chevrolet Silverado 2500 HD
    If your 2019 Chevy Silverado 2500 HD Duramax already has a built in TPMS, I don't think you'd need to add the additional sensors to the TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors # TST-507-FT-4-C, but I would definitely consider it. The great thing about adding sensors to this system and not using your vehicle's monitor, is that you can monitor everything on one monitor, as opposed to two. The TST system has an easy to read monitor that can be setup...
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  • Are Flow Through Tire Pressure Sensors Better for Trailer Tire Pressure Monitoring Systems
    Flow through tire pressure monitoring systems are the way to go as you can inflate the tires without having to remove the sensors. They do not add a significant amount of weight either. So for a tandem camper trailer like you have the part # TST-507-FT-4-C.
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  • What Tire Sensors Can I Use With The Factory TPMS System On My 2021 GMC Sierra 3500HD Denali?
    The only trailer tire sensors that will work with the factory TPMS on your 2021 GMC Sierra 3500HD Denali is the GM kit 85110397 that is sold through GM. These sensors will need to replace the valve stems on your trailer wheels. I recommend staying with a system like the TST TPMS # TST-507-FT-4-C. These sensors will monitor the pressure like the GM sensors but unlike the GM sensors they are easier to install and can monitor the temperature inside the tire. This will help you to see if...
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  • Can TST TPMS for RVs # TST-507-FT-4-C Be Used on Boat Trailer
    Yes, the sensors of the TST TPMS for RVs # TST-507-FT-4-C are waterproof so you could use them on a boat trailer and submerge them. This comes with a signal booster so you would not need to use one with it.
    view full answer...
  • Can Rubber Valve Stems be Swapped to Metal to Use TST Tire Pressure Monitoring System
    We actually have had customers make the swap from rubber valve stems to metal valve stems so they can use the TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors # TST-507-FT-4-C. I added the cut out of that review for you to check out so you will have no problem whatsoever making that change. Just be sure the valve stems are steel, chrome or nickel. You can use the Americana Metal, Bolt-In Valve Stem # AM20906 which fits either of the standard hole sizes...
    view full answer...
    Image 1 for
  • Where to place the Signal Booster for TPMS Sensors on 24 FT Gooseneck Aluminum Trailer?
    The Signal Booster # TST-507-R in the TST TPMS for RVs - Color Display Kit # TST-507-FT-4-C should be mounted on the front of your 24 ft gooseneck trailer. It can be mounted on the outside of the trailer as it is waterproof. You can mount it so as the light is visible when driving so that you can see that it is getting power. The booster can be mounted to either the battery or wired in on the 7-way so that it will receive 12 volt power when you need them to operate. If you wire it to...
    view full answer...
  • Does 20 Foot Trailer Need to Use Signal Repeater with TST TPMS
    For a 20 foot trailer you would still want to use the signal repeater that comes with the TST TPMS for RVs # TST-507-FT-4-C. Even though your trailer does not seem that long it still will be needed.
    view full answer...
  • Can TST TPMS for RVs # TST-507-FT-4-C be Used with 2019 Ford F-350
    The TST TPMS for RVs # TST-507-FT-4-C could be used with your 2019 Ford F-350 but it won't tie into the factory dash display your truck has. It will only display the info on the included monitor. We don't offer a similar solution that will display on your truck dash either.
    view full answer...
  • How Does TST Tire Pressure Monitor System TST-507-FT-4-C Alert When There is an Issue
    When there is a tire with low pressure or any other anomaly there will be an audible alert combined with flashing messages to let you know what the problem is. Whether it's high/low pressure, high temperature, or fast leak. It will then tell you which tire is the issue as well as it will be flashing on the display which shows each of the tires represented around the main display.
    view full answer...
  • Does Signal Booster of TST TPMS for RVs # TST-507-FT-4-C Have to be Installed
    The TST TPMS for RVs part # TST-507-FT-4-C that you was basically designed to always use the signal booster that comes with it so I would have to recommend you use it for your setup.
    view full answer...
  • Will the TST TPMS Bend or Break Valve Stems When Used
    The # TST-507-FT-4-C TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors works with metal (steel, chrome, nickel) valve stems. If you are using rubber valve stems they will not be covered under warranty. As for the metal valve stems, this will not be able to bend or break a metal valve stem. I have attached a video review of the TPMS for your reference.
    view full answer...
  • Easiest to Install/Use Tire Pressure Monitoring System for Trailer Application
    The tire pressure monitoring system I would recommend for a "beginner" or anyone looking for the easiest to setup and easiest to use in general is the TST TPMS part # TST-507-FT-4. The reason I recommend it is because it installs easier by attaching to the valve stems (others mount in the tire), it's a flow through design which means you can inflate/deflate the tires without removing the sensors, and because it has a grayscale display instead of color which helps with the cost. If you...
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  • Deciding Between Flow-Through and Cap Style TPMS Sensors for an RV
    If you have valve stems with a metal body like the Americana Metal, Bolt-In Valve Stem part # AM20906 then you will want to use flow-through sensors but if you have valve stems with a rubber body like the Americana Rubber, Snap-In Valve Stem part # AM20903 then you will want to use the cap style sensors. The TST TPMS for RVs part # TST-507-FT-4-C and part # TST-507-RV-4-C are my recommendations.
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  • Difference Between TST-507-FT-4 and TST-507-FT-4-C Truck Systems Technologies Tire Pressure Monitors
    The only difference between the Truck Systems Technologies Tire Pressure System # TST-507-FT-4-C and the # TST-507-FT-4 is that the # TST-507-FT-4-C features a color display monitor and the # TST-507-FT-4 uses a black/white display monitor. Other than that, they're identical. I've linked to a product demonstration video featuring the # TST-507-FT-4-C.
    view full answer...
  • Is TST Tire Pressure Monitoring System Color Monitor Compatible with EEZ Brand Sensors?
    Yes the Color Monitor for TST TPMS Systems # TST-507-D-C is the newest monitor. It is not interchangeable with the EZZ RV tire pressure sensors as they are different brands so the transmitters and receivers are different. You'd need to get the entire system for compatibility. Options include: -TST TPMS for RVs - Color Display - Signal Booster - 4 Tire Sensors # TST-507-RV-4-C -TST TPMS for RVs - Color Display - Signal Booster - 6 Flow Through Tire Sensors # TST-507-FT-6-C -TST...
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  • Tire Pressure Monitoring System that Can Be Used with RV and Trailer Tires
    Yes we have kits like the TST TPMS for RVs part # TST-507-FT-6-C which come with 6 flow-through sensors (means you can air up the tires with them left installed) that you can use on the RV as well as the trailer so that you know exactly what the tire pressures are. We also have this kit with 4 sensors like with # TST-507-FT-4-C.
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  • Is TireMinder Smart TPMS Compatible with Sync 3 Bluetooth in 2018 Ford F-250
    From what I could find it doesn't look like the Sync 3 system from Ford will support the TireMinder App just yet. You may still be able to use the TireMinder # TPMS-APP-4 that uses the Smartphone display but I don't think you'll be able to utilize it with your 2018 Ford F-250 unless you are somehow able to install the app on your truck. If you can't download the app and/or it doesn't work with the Sync 3 then we have the TST System # TST-507-RV-4-C which uses the standard sensors or...
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  • Does Signal Booster for TST TPMS Come With Inline Fuse
    I reached out to the manufacturer, TST, about the Signal Booster for TST TPMS # TST-507-R, who told me the following: 1) The repeater does come with an inline fuse on the positive (red) wire. 2) All current repeaters do come with ring terminals. 3) When mounting the booster inside (such as in a bay) you can use any SPST (Single Pole Single Throw) switch. For this I recommend the Pollak Heavy-Duty Toggle Switch - SPST- On-Off # PK34212. The booster can be added to or used...
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  • Will Tire Pressure and Temperature Increase a Lot When Driving Long Distances With 225/75-15 Tire
    The psi and temperature are going to change based on the tire and the temperature outside for your ST225/75R15 tire like the Westlake # LHWL304. So it is not surprising at all that the psi climbed based on your long trip as well as the significant rise in ambient temperature, as that is completely normal. The 112 degrees your tires were is absolutely safe and normal, as tire pressure monitoring systems don't signal alerts until they are much hotter, such as the 158 degrees of the TST...
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  • Recommended Tire Pressures For Goodyear Endurance ST225/75R15 Trailer Tires
    I recommend using the Goodyear recommended tire pressure with your Goodyear Endurance ST225/75R15 Radial Tire # LH33FR. As Goodyear developed and tested their tires to work properly based on their recommended tire pressures, it would not make sense to use anything other than their recommendations. If you are between 3,761lbs and 4,040lbs with your trailer, than 45PSI would be what I recommend using. Remember that this is a cold inflation pressure that should only be checked before...
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  • What is Max Safe Tire Temperature
    The typical tire should run about 158 degrees (Farenheidt) once you get going down the road, but this can vary greatly depending on the weight of the trailer, how fast you're traveling, and also driving habits. So while 158 is probably "normal", it isn't really a standard to try to stay at. I will say that you do want to avoid hitting the 167 mark as that is usually when problems start to arise when you go over that. 200 degrees is when you need to stop and check things out. If you have...
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  • What is Difference Between TST Tire Pressure Monitor Systems # TST-507-FT-4 and # TST-507-FT-4-C
    The two kits you mentioned are basically the exact same with exception being the color of the display. The # TST-507-FT-4-C has the color display that puts the alert messages in red if there's high or low pressure as well as temperature whereas the gray scale # TST-507-FT-4 would display everything in the same gray-like color. Either kit works great on rubber valve stems. For the second trailer you'd need additional sensors with # TST-507-RV-S4 and you'd be able to use it with the same...
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  • What Should High Pressure Alarm Of TST TPMS for RVs TST-507-FT-4-C Be Set At For ST235/80R16 Tires?
    You should air the tires up to the max PSI rating stamped on the sidewall of your tires, which in your case is 95 PSI as you mentioned. Trailer tires have a different sidewall construction compared to standard vehicle tires, and running less than the max air pressure causes the tire to build up excess heat. Since heat is the main enemy of tires you want to do everything you can to avoid heat. When setting the high pressure warning of the TST TPMS for RVs - Color Display - Signal Booster...
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Info for this part was:

Employee Tyler C
Edited by:
Tyler C
Employee Jeff D
Installed by:
Jeff D
Employee Adam E
Installed by:
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Employee Jameson C
Expert Research:
Jameson C
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Test Fit:
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