Spurtar Tire Deflator, 6-30 PSI Air Down Tire Deflators Offroad Accessories for Jeep, Car, Truck, Motorcycle, and ATV (4 Pack with Storage Bag)

Work great

They work well and are adjustable. They take time to adjust to desired pressure, but once set it is super convenient. They take almost 15 minutes to deflate from 39 psi to 17 psi.

Couple things... It does take a looong time for these to deflate your tires to the set PSI. My response to that would be adjust your schedule accordingly. I know some people who will put these on at the hotel and drive to the off road park with them on. Not saying that's what you should do, but it helps timewise. 2nd, if your tires didn't deflate all the way when you get to where you're going and you hit the trails with them still on, you will go below the set PSI. As you bounce up and down, crawl over rocks, make drops, etc... your tires go through different amounts of pressure. So even after it stopped letting air out at your desired amount (say 10 PSI) you could still drop down to 5PSI, or lower, so becareful.

These things save you time when you’re offloading they’re perfect you preset them you hook them up and you let it go and then when it gets to it needs to be on your air pressure then you put them back and go have fun when you’re done. are you charged back up?

Works exactly as needed. I Set them to 20 psi the first time I used them and they do it every time now! They do get a little slow at the end but saves a lot of time just knowing you can throw them on and it will go right to what you need.

Good product works just as good as the more expensive ones at half the price

These appear well built and feel solid. I adjusted all four for the same pressure on the same tire. However, when I used them the results varied as much ad 5 lbs pressure. Convenient by springs are a cheap metal resulting in inconsistent pressures. If you use these with lockers, check your pressure to avoid damaging your vehicle

I purchased these for my 2012 Jeep Wrangler because I drive on the beach fairly often when I get a chance. It took a little bit of playing to get them set to about 16-18psi, but now that I set them and locked the setting, it seems to work great. There is a slight variance in the psi for each, but that is due to how it works with a screw and spring. I think it’s perfect for my use since it is just out on each tire at the same time and I don’t have to stand by each tire one at a time and air down. I don’t mind if they are off by 1-2 psi for that, and even if it was an issue, I can dial it in with a tire gauge at the end and still save a lot of time. It only takes a few minutes and I’m ready to play/drive in the sand!! I added some silicon lub spray that I had, just to make sure it will last, but I’m not sure that is needed.