J.T. Brooks Automatic Tire Deflators Pro II

I’ve seen minor accuracy issues reported by others, 1-2 psi isn’t going to create a critical failure of any kind. These are expensive, but mine are manufactured in the USA, not sure if they still are as I purchased mine 8 years ago:) I use them on my jeep tires and they work perfectly every time and I wheel a lot. Highly recommend the co2 air refill systems (power tank) for speed and convenience of refilling air extra quick like, but refilling the co2 tanks can be very hard in my area (Seattle) not a lot of options and they hassle you for not just swapping your tank. Anywhoo the deflates are top notch and worth the money as build quality on mine is excellent

I bought these to deflate 35" Jeep tires for off-roading and 35" F350 tires when towing our camper into sand dunes. These work great and they are very accurate to the PSI you set them to. I am able to get down to desired PSI faster than my friends that use 4 way connectors as those take way longer to setup.Only issue I have seen is that the valves have worked themselves lose when deflating the tires on the F350. I did lose a lock ring on the sand. I contacted JT Brooks customer service to look into getting a replacement locking ring, and they responded immediately. Great customer service. I will need to make sure I am locking these tighter when using on the truck.

These are a breeze to set up and use. They really reduce trail prep time by deflating the tires much quicker than using a single deflater. Just set your psi limit, screw the deflator on to the tire, pull the deflator's center stem and move to the next tire...air will release from each tire until it reaches your set limit. While these may not be the least expensive, they've been the easiest (simplest) and quickest deflator devices I've used so far... I recommend that during first use, cross check the deflators psi markings against a tire gauge you trust - then lock them down and your good to go...enjoy!

4 stars cause they’re so expensive and mine don’t seem to cut off at exactly the desired psi- I have it set for 19 and it goes to 17. Let’s air our super fast though.

I use these at least 4 times a month, sometimes deflating tires on two vehicles each time. Based on our Jeep dash reading, they are just about spot on every time. I am buying a set for my daughter's Jeep.

Have only used this product once to test it right after it arrived. Have 35" tire on our Jeep and run them at 38 PSI on the street. I used the JT Brooks Pro to deflate the tires down to 25 PSI. Three of them were dead on 25 when they stopped and one was at about 24.5. Verified with tire gauge that I trust. Need to try them at different PSI, but as of now, that's about as accurate as it could get. I set the body on the deflators so that the 25 PSI mark was just barely visible and locked it in, making sure that it didn't change the setting. They are not super fast, but that's good, because it allows you to put all 4 on at the same time. All Top makes deflators that work exactly the same way for less money. They get some good reviews, too, but I have never used them. One reason I bought these is that they are made in the USA. I have enough stuff on my Jeep that is made in China!!! Would buy them again. If they don't work at other PSI's I will update my review.

Bought these for airing down my tires for off-roading. They're small, come in their own pack and are really easy to use. Also, very accurate. Just realize that the air pressure setting is not what you see above the adjustment collar, but what is set at the body of the tool. Just buy them, till see what I mean. ALSO, use them at home before going out on trail to be sure you're familiar with their operation.

Worked ok at best when new but they kept drifting requiring them to be reset. I run 12 PSI and they would range 8 to 15 depending on the day, several times one would fail to stop requiring me to air up. It has come to the point I have to reset them every few trips and this last trip one has failed altogether and will only drop air if i hold the pin out. These were not cheap and my wife's EZDeflator set that are twice as old and only $14.41 are still working fine on the original setting. Very disappointed it this crap.