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

Expectations and Background I purchased the ALL-TOP Adjustable Auto-Stop Tire Deflator Valve Kit about a year ago to simplify the process of airing down my Jeep’s tires before heading off-road. My main goals were accuracy, speed, and convenience during off-road trips. Performance and Experience After several uses over the past year, I’ve been impressed by how well these deflators perform. They’re easy to set, air down quickly, and consistently bring all four tires to my desired PSI. The auto-stop feature removes the guesswork and allows me to prep for the trail more efficiently. Pros • Fast air-down times, saves valuable time at the trailhead • Accurate PSI settings make tire pressure uniform • Simple to set up and use, even for a beginner • Durable, withstood regular use over a year without issues Cons • No significant drawbacks encountered so far Comparison to Product Description The product works exactly as described. It reliably airs down tires quickly and stops at the preset pressure, matching my expectations and the advertised features. Takeaway If you’re looking for an easy, dependable way to air down tires for off-road driving, especially on vehicles like a Jeep, this kit is a great investment. It’s become a must-have in my trail gear.

Works like intended, quick, light, and easy to set, attach, and operate. I love that it includes a little pouch to store them in so they don't get lost in the glove compartment. The price was competitive compared to others I looked at on Amazon.

These are a great product! I have another set that looks identical to the Stauns, and these All-Top deflators work much better. These are consistent, but that depends on user care in consistently setting the desired pressure. These start very smoothly and shut off nicely. The lesser performing deflators had a simple flat-head valve seat, but the All-Tops use a chamfered valve seat, and I believe that is why they perform so smoothly and consistently. For my test, I set the deflation to a bit less than 20psi on the front tires and a bit less than 30psi for the rears. The fronts (both) automatically deflated to 18.5psi, and both rears went to 28.5psi. The reason for being less than the marked 20 and 30psi was that I set them just below the lines instead of exactly on the lines. The differences were trivial in terms of driving performance. One thing to be aware of is that after use, the adjustment should be backed out as much as possible without disassembling the units in order to relieve the spring compression and extend the product life.

Almost works. Followed directions verbatim. Set the dial to 20psi and they stopped at 25! Verified with 3 different gauges and vehicles TPMS! Still makes deflating a little easier and quicker.

These deflators worked just fine! They were exceptionally accurate. They all deflated the tires to within 1 psi of the target setting. They were all within 1/2 psi of each other. Allowing for setting tolerances & gauge tolerances, they all preformed well within their rated tolerance of 2 psi! Remember, these deflators are just designed to get you close to your desired pressure. If you are involved in some motorsport where tire pressure is critical, you need to fine tune your tires manually. But for a little off road or beach driving, just spin these on & you don't have to wait around for each tire to deflate. I think that where most people are having problems with these deflators is that they're reading the setting from the wrong location. You MUST read the setting from the top of the body, with the knurled locking ring backed way off out of the way!!! (See Picture) If you read from the top of the locking ring, you will set the deflators 8-10 psi LOWER than the desired pressure! The symptoms described by most of the people having problems with these deflators is consistent with reading the set pressure from the top of the locking ring instead of the top of the body.

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.

3 stars because the materials are good quality, however the tuning is really off. Can't trust the psi shown on the valve. If I select 25psi it takes my tires down to 15psi. So I have to set it to 35psi for it to take my tires down to 25. Yeah its off by 10psi....and there is no way they dont know about this. So why dont they simply write 15 instead of 25 and 25 instead of 35...beats me.

Works as designed

ممتاز التنسيم و سريع، ما يمديك تركب الرابع إلا الاول خلص. و يجي معها غطاء بلوف التنسيم شكلها جميل

安価な商品なので正確な空気圧の設定は出来ませんでした。 何度か試してみて希望の空気圧手前で大凡で設定、その後はエアゲージなどで手動で空気圧を合わせるなどすれば便利に使えます。 私はオフロード走行時に毎回使用してます。

gr8

What an amazing addition to my off-road gear. Exactly as described and when set properly they are accurate within 1 psi. Easy and convenient to operate. I’ve had expensive deflators and these are comparable. Would purchase again.

Excelente