CLC International EZ Read Tire Caps - Valve Stem Caps That Monitor Tire Pressure - Tire Caps, All Season, Prevent Flats & Blow Outs - PSI 39/40

I bought a set of four set for 80 PSI for my RV. I followed the instructions precisely. One of my tires was at 40 PSI after having these on for a weekend. We didn't move the vehicle and the tires were at 80 PSI upon installation. There is clearly a design problem here. These need to be designed so no air leaks out, period. I'd pay more and have this product work as advertised.Update: I was very thorough and made sure each tire was at 80 PSI and drove a day with regular valve covers: no air loss. I re-installed these pressure reading valve covers EXACTLY as the instructions indicate. After only a few hours of driving every tire was down to 40 PSI. Put the regular valve stems back on (after airing up my tires) and they have remained at 80 PSI.

I bought these as a low-cost alternative for Tire Pressure Monitoring on my older Chevy Uplander. For some reason, its tires keep deflating slowly, and I have had them checked repeatedly at the tire shop. They are very simple to install, and having checked (and, yes, ADDED air to two of the four tires) I screwed these on. It's very easy to tell when the tire hissing ends, and I gave them just a half-turn after that. As an old guy, it's nice to know I don't have to get down and check the pressure repeatedly with these in place. I'll update this review when the tire caps tell me to replace air and share the results; but overall, this was a good buying experience, fast delivery and a very reasonably-priced alternative to premature tread wear from underinflated, expensive (and leaky) tires.

Have always liked these caps, these are my 2nd set. Odd though, how they warn you not to overtighten by only giving one more half turn after the hissing stops. I have a lot of nice valve stem thread left, and I sure hope these things don't unscrew themselves over time.Im also hoping that adding the extra grams won't necessitate a re-balance.In addition to the caps, included were a light carabiner and bottle opener! Score!Update: I forgot to mention...plan to have your tires re-balanced after install, or your vehicle may vibrate down the road.

These work great. I set all the trailer tires to 50 psi, then installed the caps. They all went green as expected. Nice and easy to see when walking around the trailer.

So far so good on my 18 wheeler went to Canada and back no problems and it was snowing and cold

After researching several different brands I decided to go with these. I got the 34 PSI caps for my 1999 Ford Taurus. The instructions say several times not to over tighten and to only turn 1/2 turn more after you here the air stop coming out of the stem. I did just that and these are working great so far. No flat tires. Since my car was built before TPMS was standard (thank god), these are a great quick visual check to see if my tires are properly inflated.These caps are good quality and did not feel or look cheap at all. They cost more than other brands but for $15 it’s better than dealing with a flat tire.Shipping was a lot faster too. They arrived in just a couple days instead of the “expected delivery date”

Top piece that indicates air pressure fell off one of the caps. Contacted seller and their first words was that it was my fault for installing it incorrectly. Wow. The instructions clearly state that if the cap is incorrectly installed, the tire will lose air....not fall apart.Here is the exact message from the seller, "It sounds like you have damaged the part if some it is missing. You can return the part and we will examine to see if it is a manufacturer defect. We do not sell individual parts. If that is what you choose to do, please put in a return request.Other option would be to purchase a new set."

Watch OUT for these if you go thru a car wash. I put these on my 2016 Toyota Corolla and went thru a car wash they cracked and bent to the tune of $346.00 to have my air pressure sensor replaced at the Toyota dealer. I tried to get the money from the car wash place and they have a big sign not liable for damage created by after market add ons period.