ALL-TOPAdjustable Auto-Stop Tire Deflator Valve Kit (10-30 PSI) 8 PCS Screw-on Tyre Air Down Tool for Offroad 4x4 (with 5 Valve caps)

Works great, much faster than less costly brands. Had to dial them in slightly and, same as any other you'll find, they may let out more air than intended if you let it

They work really well once you get on calibrated

I paid 3 times the price for another set of tire deflaters and was disappointed! They didn't have any visual indicator and it frequently came out of settings.On a recent wheeling trip, my buddy let me try these.... I ordered them before I got home from the trip!Easy to visually set and lock the pressure; and know it's going to be right every time you use it. And quickly can be set to any pressure in the range.I used a digital air pressure guage to read the tire pressure afterwords... spot on.I have 2 sets now. One stays in my jeep and the other in my recovery gear bag.

I use these to air my tires down to around 15 PSI for 4-wheeling. They work well enough, in that they will deflate even a large 35" tire in just a few minutes, and they will reliably slow down once they get around their set PSI. However, they're not quite set-&-forget. I'd say they have about 2-3 PSI margin of error, and they often won't completely shut off once they reach their target. You're best served by keeping an eye on your car's TPM system as you use them, or manually check your tires once deflation starts to slow down. Otherwise, you might deflate them too much before they shut off. I've found that it's best to set the gauge on the deflator about 5 PSI higher than my target pressure to make sure I don't accidentally overshoot.

The ALL-TOP Adjustable Auto-Stop Tire Deflator is a must-have for off-road enthusiasts. It’s well-built, easy to set up, and quickly deflates tires to the desired pressure with great accuracy. The auto-stop feature is a game-changer, saving time and effort on the trail. Durable and reliable, this tool is perfect for anyone looking to improve their off-road experience. Highly recommended!

I purchased these tire deflators from All-Top because I had previously purchased their air compressor set up for inflating tires and was impressed. I had read reviews and watched a lot of videos online about tire deflators and Staun seemed to be the gold standard, but the $99 Price tag was daunting and I wanted to ensure I wasn’t missing out due to quality or accuracy concerns if I purchased these from All-Top for $39. These have pre-set markings on them, and I dialed the setting into 15 psi on the All-Top deflators and put them on my tires. After about 6 min, all four my tires were within one or two psi of my desired setting. They were either 16 psi or 17 psi. Having watched reviews about these I knew that you could calibrate them the same way as the Original Staun deflators. So I used my up down, air tire deflator that removes the valve core and I lowered one of the tires to 15 psi and calibrated both these and the set from Staun on the same 35 inch tire on my gladiator. The pressure gauge on the Up Down Air tire deflator, and my computer on my gladiator both said that the tire I used was Inflated to 15 psi. The calibration process was easy. I then aired up all four of my tires using the All-top compressor, which took just a little over eight minutes Using a four tire inflation system. Then I used the All-Top tire deflators to deflate the tires and it took about 6 1/2 minutes to get them from 38 psi down to 15 psi. I used my jeep gladiator computer to test tire pressures and three of the tires were 15 and one of them was 16. I’m pretty satisfied with that outcome. The Staun deflators took more than twice as long to deflate coming in at almost 15 minutes, I had inflated the tires to 38 psi after my test with the All-Top. And they only deflated down to 17 on three of the tires and 16 on one of the tires. So calibration process was not as accurate and the air down process took way longer. Overall the All-Top system was more accurate and faster then Staun. Plus this system comes with nice black metal caps for your valve stems.

I’m happy that I tested them before I went out trail riding. I set them to 20 psi which is the lowest you can set them. It never stopped deflating the tires. I noticed the tires were almost completely flat and removed them. Set them to 25 psi and they stopped at 17 psi. Disappointing but they are still usable. Just know that they don’t perform at the level they’re supposed to.

Easy to use. Really good for the price. The design is kinda cool it comes with a bag to put them in.