CZC AUTO Automatic Tire Deflator Kit Adjustable (10-30 PSI), 4PCS Screw-On Tire Air Down Tool Tire Deflators Offroad Accessories for Offroad, Jeep & Trucks, 5 Valve Caps & 1 Storage Bag Included

This is a nice set of deflators for offroaders. The storage bag and spare caps are a nice touch. I like the graduations for PSI on the side. They're accurate enough. With even a little practice you can get these to deflate to your desired pressure easily, and dial them in before each air down. Several people have said they are slow. Well sure, they're way slower than removing the valve core. But when you do that, you have to baby-sit each tire. With this style, just put them on all tires, and wait for them to stop hissing. Overall it's not much slower than removing the cores and it's far less work. If you're a hard-core every-weekend offroader, maybe you'll want some super high-end deflators for a couple hundred bucks. Good for you (seriously). For the rest of us, this is a good value on perfectly serviceable and convenient deflators.

I really needed something to let the air out, I went off roading to Pismo Beach and it literally took forever to let the air out. Just as much as it took to put it back in. These have an adjustment that stop the air release at a whatever PSI you determine is suitable.

Easy to use, but not very accurate. I needed to set the PSI to 25 to achieve actual 20 PSI. It does come with a handle zip pouch for storage.

In the package were only valve caps and missing the rest of the whole item that I’ve ordered and paid for.

None of these that i've tried have been super accurate. This one varies by about 2-3 PSI but thats not a problem for what I use it for, and thats to deflate the tires on my jeep before off-roading in the sand. These are really easy to use, you just set the PSI you want, I go for 20 and lower the rest of the way to 15 manually, but these getting the tires to 20 make it so much faster. You just set it and screw it on all 4 tires and wait a bit. VS having to sit at each tire and manually let the air, which could take 3-5 mins per tire. All that time really adds up. Good build quality.

I’m a little on the fence about these because the core-removal type is faster. But these are convenient and come in a set of 4 so you can get all of the tires going at once. My off roading is typically “easy” (I have a 1 ton diesel), so I’m mainly deflating to around 35-40 psi for ride comfort, slightly better traction , and to go easy on my tires over sharp rocks. But I deflate a lot, so both convenience and speed are important. To operate, just set the psi you want to reach and screw one of these onto each tire valve. Pulls the rod out to make it deflate faster. Pros: good quality; deflate all tires at once; convenient preset inflation levels to choose from; very compact with a nice zippered carry pouch that easily fits in my glove box; spare valve caps (x4); speed for 4 tires might be as fast as with a core removal deflator (and with less “work”); might be safer the core-removal since this is just depressing the schrader valve Cons: not as flexible nor as fast (per tire) as core-removal style So mostly pros, but I’m going to have to compare these to my existing * deflated wrt speed across multiple tires over multiple outings. I have to say, I really like the compact size and utter simplicity of these. I deducted 1 star because the 30 psi preset returned 36 psi. I didn’t test all 4 units—just 1. 36psi is actually good for me as I typically deflate to the 35-40 range. The preset range on these goes down to 10psi, so you can easily go very low if desired

Very good product. Much easier to use then going tire to tire. Plus its smaller size and bag help keep all the pieces together in my auto travel bag. I ONLY Wish It came with instructions but am still pleased.

Deflated tyres helps vehicles drive off road through soft sand and over sharp rock. Airing down four tyres in succession by alternating off gassing and measuring the remaining pressure until you get them down to where you want them to be takes a lot of time and effort. These make the task much easier. Set the desired pressure, screw it onto the valve stem, pull the plug, and down they go — all four of them at the same time. A solid set of deflators. Recommended.