Tymate TM7 Tire Pressure Monitoring System, Wireless TPMS with 4 External Sensors & 6 Alarm Modes, Colorful Display, Real-time Tire Pressure Monitor System, Ideal for RV SUV MPV Truck Sedan (0-87 PSI)

I bought one of these for my daughter's car (in May—it’s now late October, 2024), who is in college (and is really careless about things like this). How did it help her? As summer slipped into fall, all her tires went down in pressure a degree, then another, finally down to about 26 or 27 pounds each. Did she notice them going down? No—even though Tymate properly reported the pressures—she just didn’t glance down at it, although she’s always fooling with stuff all in and around the Tymate, because of her phone, and countless cosmetic stuff there. But once it got down to about 27 pounds, it started beeping at her, so she had to figure out what was beeping, and why, after which she told me about it, and came home for me to get her tires up to specs. Without this, she would have worn her Michelin tires (4 new ones this last summer) out early. (She's not spoiled--I have her buy them out of her waitressing money, to help with responsibility.)For some reason when I first installed them, one of the sensors was off by two pounds. I emailed Tymate through Amazon, and Tymate immediately rushed out a new sensor to resolve the problem. However our daughter is in school most of the time, and by the time she came home (school isn't far), somehow the original Tymate sensors were all perfectly reporting pressures in all tires.We have 3 old cars (including my daughter's car), such that all have those dummy TPMS (tire pressure monitoring system) notifications, by which I mean a single icon comes on, meaning that ANY of the tires may have too much or too little pressure. That's bad enough, but what's worse--you check all the tires, and they’re perfect, which means that one (or more) of the sensor(s) is/are bad--which one? Well, supposedly a tire shop can use their equipment to find out which one(s), but then you have to the tire dismounted from the wheel rim, the TPMS device removed from inside the wheel, a new TPMS installed, which also means you will have to have that tire balanced again. That stupid procedure costs significantly more than this Tymate system, and you STILL have no idea the pressure of any of the tires. So for a good bit less with Tymate, you ALWAYS know the pressure of each tire all the time (at least once you get to 12.5 MPH), and exactly which tire, and the temperature of each tire, because if the sun is blazing on some tires, while others are cool in the shade, it can vary the tire pressure by multiple pounds, but it also shows the temperature of each.So, my wife (correctly) noticed the tire pressure of one of her tires low. I fixed that, and bought a solar charge wireless version of these (can’t believe I didn’t do it that way for my daughter’s car—it can only be read where plugged in a 12V outlet). The wireless version you can mount wherever you want on the windshield. For me, I choose the extreme top-left corner, where it’s behind the visor (if down). (I moved the oil sticker to be below this.) Later my wife again told me about a tire being low, even though the Tymate reported correct pressure. So I manually checked the tire, and Tymate was reporting perfectly accurate information. I still had trouble convincing my wife—I explained about the engine up front causing the tire to appear lower…blah, blah, blah—I barely convinced her, but I’m thrilled to know all the time now.My own car was also giving the incorrect TMPS icon (which is barely helpful, and only if correct, which it’s not, so it’s a pain in the rear), so I got another solar wireless Tymate and installed it on my car. All my cars are Toyotas, about 200,000+ miles on them, all with perfectly running engines, transmissions, and virtually everything else. Some people really disparage not getting the Toyota brand TPMS, insisting that only Toyota’s are accurate. That alone is about double the price of Tymate BEFORE the expensive installation (for ONLY ONE tire, as opposed to Tymate being for all 4 tires), and you still only get the idiot icon. Such a blessing to have these Tymates!Oh…one more thing. With the wireless/solar Tymates, they are only designed to be mounted to the windshield, NOT your dashboard, therefore they have to be “stuck” in place. They come with 3M double-stick already installed in them, which you just pull the strip off and stick to your windshield. I did NOT want to do it that way for several reasons:1. Windshield do need to be replaced, whenever a rock flies into it. So how do you then get the Tymate off? I’m not saying you can’t, but it may not be easy.2. Perhaps you would later like to change to location on your windshield (e.g. I can hardly find a place to please my wife, and might she change her mind once installed?)3. I might like to temporarily remove it, such as when cleaning my windshield.So I just cut some Velcro, to precisely fit on top of their 3M tape area, taped the “hook” (rough, scratchy) side on top of the (still covered) 3M tape on the Tymate, and the “loop” (soft, fuzzy) side to my windshield. Now I can easily pull it off and place it back on again any time I want. If I want to move to another windshield location, I just cut a new “loop” side for the Velcro, and install in the new location.

My dealer wanted to charge $900 to replace the tire pressure sensors in my Subaru. Somewhere in the back of my mind I recalled seeing things like this some time ago, so after a quick search found this. It has been great in the week I've had it. Super easy to setup, the instructions for pretty well written, and small enough to fit in cramped cigerette lighter style power ports. Approximately 2.25" wide by just under 2" tall. The only neagive is it makes an annoying beep when you first turn on the car.What really makes this 5 stars is the fact that it has USB-A and USB-C on the side so it also works as a USB car charger! Using my iPhone 16 and a cable that gives me a watts reading, the USB-C was putting out 8W which isn't the fastest in the world but pretty good. As good or better than a cheap car charger.

After becoming accustomed to TPMS data on the newer vehicles, I now felt hindered on the older truck. Easy to install, each sensor is about the diameter of a larger button battery and slightly taller than a tall valve cap. They did not seem to cause enough tire balance difference to notice, but this truck is not a good judge of smoothness either. I am now considering ordering a system for my motorcycles that do not have built in sensors.I had one sensor that was reading below the others. I notified the seller, they asked me to swap two sensors to be sure, and then they sent a replacement sensor. I expected it to take weeks to arrive, but it arrived quickly. The process to learn the new sensor is easy, but my only suggestion to improve would be to include the correct instructions for the model purchased and the procedure needed. The included paperwork had every instruction but the one I needed, but it was available on the Amazon item page. The seller impressed me with the handling of the issue.

The installation was simple. Be sure the tire pressure you want as a baseline is correct first. The alerts or alarms are based off of the baseline sensor readings. i.e. if your tire is at 32 psi, the low pressure alert is 15% less than base or 5 psi less being 27 psi for the alert. High pressure is +25% from the baseline. So if your tires are not at the same pressure to start with, than the alerts will also be at different set points. They include a jam nut or what they call an anti-theft device. After the sensor is installed, you just tighten the jam nut to the sensor. For my wheel covers, accessing the jam nut is not practical. You could remove the wheel cover to get better access, but if you install it too tight, you will need to remove the wheel cover and loosen the nut to add air. Somewhat of a pain. I chose not to tighten the jam nut for convenience to add air without removing the wheel cover. If you don't have wheel covers or plenty of access you might give it a little snug. Be sure to keep the wrench in your vehicle. The documentation states to use CR2032 batteries for the sensors. Those batteries are larger than the sensor. The correct battery is CR1632 if you are going to order and have spares. I couldn't find anything about the physical size but the display or receiver is 2-1/4" square. The location of my power CLA is too close to install this unit without using a pigtail. Also, if you plan on using the usb ports they are on the left side of the unit, so you need to allow for extra space for them as well. The usb ports are rated at 5v 2.1 amp so you won't get fast charging capabilities for a phone, etc. The unit did show the correct tire pressure I had for each wheel before installing the sensors. The temperature though varied 12 degrees. Now that they are installed and set up, I just need to see how functional they are in use over time. Of course when you rotate the tires, be sure to keep the sensors in the correct car position such as FR or FL and RR or RL.Also as a plus, when you turn on your ignition or it powers up, it shows your battery voltage. Nice info to know.