Tire Pressure Monitoring Valve Caps Sensor Gauge - Advanced Detection System, 38 PSI Sensing Air Alert Indicator for Cars, Trailers, Bikes - Chrome-Plated, Pack of 4

Excellent product which makes it easy to see the correct tire pressure.

I got these on my 25 Cougar. No issues or complaints. You can really see the green indicator from an appreciable distance and they do not leak. I’ve got 2 months on my installation and haven’t lost the slightest pressure. They seem very durable and well made. Look nice too. A bit pricey but with a caveat, it’s a better price as compared to a TPMS.

I have been using these pressure monitors on my car for over 3 months now, and I am amazed at how well they work! As these are rated for 40 psi, I keep the tires inflated to 43 psi and now I can check pressure on each tire simply by looking for a green indicator. Excellent. Few things I noted... After hand tightening a monitor to the valve stem of each tire, you really must drive your vehicle for like 10 miles first in order to "prime" them before you'll get an accurate reading. So, keep this in mind should you ever need to remove the monitors for any reason, like when it's time to change your tires. After a monitor has been showing all green for a while, if ever it begins to show just a little red, then that is an indication to check the tire's pressure immediately using a good quality pressure gauge. To save the most gas (in this case by reducing friction with the road) you'll want to inflate most tires as close as possible to "max press" (maximum pressure) rating stamped on the sidewall. I had a buddy in college who was a real cheapo and always kept his tires inflated to max press with nothing bad happening. But that still makes me nervous, so I try to stay 5 psi under the maximum rated pressure. Chris

First install, 4 out of 4 leak. All installed by hand on travel trailer. I would not recommend. I have used many by a different manufacturer, but that part is currently not available in PSI I need, so I tried this manufacturer. They all leak around the plastic clear part that shows the red or green for pressure level. See pictures for what to look for. I applied dawn soap in water mixture spray bottle that I test propane lines with, then left them for about 30 minutes. Only 3 pics because I wiped off bubbles on 4th tire cap before I took a picture of that one. I am glad I tested these, as the tires would be flat if I hadn't. The leak can not be heard, and as you can see by the tiny bubbles the leak is very slow. I am guessing the tires would be dangerous to drive low in a day, and probably flat in 2 to 5 days.

We do really appreciate the purpose of this product, and we got the 85 PSI ones for our rollback. One of the four was kinda faulty (we bought two kits so we just swapped it) and one of our 6 tires has a faulty stem so we don't have all 6 tires capped. I will say the ones we do have capped (5), these tiny things have saved us a lot of time and hassle. The caps give a nice transition from solid Green (above 90) slowly becomes Red to let you know as the pressure starts to drop below 85, thus under 85 its solid red. Normally we have around 90-100 psi for our truck tires, so if it is below 85 its dangerous for us. Thankfully we have these caps to quickly gauge if we need to check the pressure. I say don't depend on them 100% of the time because for a while we couldn't figure out if we had a leak in the tire or if the cap was bad. Turns out it was both - but thanks to the faulty cap we even noticed the leak. TL;DR: Great for at a glance, but always double check the reading and ensure the cap is reading accurately.

I now can check my tire pressure with a look awesome and easy to know if I have to drag out the air compressor. simple install will save me from buying tires due to low pressure issues.. great product that fit right. quailty and value all in one.

Great quality. Have had over a year now and very satisfied. I would buy again. With that said they are pricey. But these are a real step up from the China junk out there.

One of the best low cost purchases I have made for my cycle. However, be careful. They read a little "delayed" meaning if you buy the 40# model and notice that a shade of the red is showing (90% green) then CHECK PRESSURE and ADD AIR. I bought another set of these 5# more than the pressure I actually maintain and it works perfect. Get ready for some of the mechanics to give you some smart ass comments. One guy tried to tell me that I was going to ruin my valve stems with the extra weight from the cap. I didn't feel like whipping out a dry erase board and explaining the force direction associated with centrifugal force to him. Anyway, they are super light as well. Seems like a little thing...but its a big time saver for cyclists like me to are methodical (for the most part) about checking moto tire pressure. Get a lot of positive comments from fellow cyclists and they ask how to find them