GSPSCN Portable Digital Car Tire Inflator with Gauge 150Psi Auto Shut-Off, Heavy Duty Double Cylinders 12V Air Compressor Pump with LED Light for Auto,Truck,Car,Bicycles,RV,SUV,Balls etc.(Titanium)

My tire is 285/70/17 Took atleast 5 mins to inflate from 10 psi to 25 psi

If you're using the outlet in the car you're not using both cylinders in the compressor. You can buy an AC to DC converter and a DC extension cable and run it at the maximum liters per minute, or simply plug it up to the positive and negative of your vehicle and make sure the vehicle is running before turning on the compressor. It takes roughly 2-1/2 minutes to air up a tire on a BMW X3 SUV from 10 psi to 35 psi (verified by a calibrated gauge). If you only plug it into the socket in the interior, any air compressor is going to take dramatically longer to air up. Get a good gauge that you know is properly calibrated, not just any gauge, and check to see how many psi "off" the compressor reads. My air compressor reads 3 psi higher than it actually is. So I set it 3-4 psi above what I need. At 4 psi over the pressure I'm going for, it's spot on 1 psi above what I need (every time so far). So if you know exactly how many psi your compressor is "off" by, you can know exactly where it needs to be set each time to hit the desired psi. Why this model and not a bigger, more expensive model? Well, the more expensive models use so much juice that there isn't an AC to DC converter powerful enough to utilize the extra power from the compressor you may be looking at. So, if home use or being able to power the compressor from a wall outlet using a converter is your thing, you will not get any benefit from purchasing a more powerful, more expensive compressor. You will have no option but to plug it up under the hood for that extra power. The other 4 Pros to this compressor are that it's lightweight, quiet, low vibration, and you can set the tire pressure and walk away without over-inflating a tire. The compressor keeps running, but you don't have to worry about coming outside to a tire with 20 psi too much air in the tire while you run back inside the house to grab your wallet. A big, expensive air compressor was and is very enticing, but their inline gauges are also extremely inaccurate. That made me reconsider, because I'm a little ocd about tire pressure, and I don't want to spend more money just to spend more time babysitting the compressor because I have no idea what psi I'm at. So here are the cons to a more expensive model - The heavier duty/mega expensive models can take more time to air up a tire if you're constantly having to shut it off and check air pressure to make sure you're not going way past the desired psi. The quickest way would be to actually over inflate the tire and then air it down with a professional gauge. Either way, you'll probably wind up spending just as much time with a compressor that's twice as fast. Remember, psi is "pounds per square inch". Accuracy is extremely important, especially on a suspension tightly tuned for an exact psi. 1 single psi more can make some vehicles noticeably harsh, and 1 psi too little can make the handling noticeably softer. At least that's how it was with older 3 series sedan BMWs. If blowing a tire is a concern due to over inflation, you don't want to step away from a heavy duty compressor unless you have big mud tires and stepping away for a bit isn't going to risk any issues. All in all, this thing is twice as fast as the fastest tire air compressor I have ever used (double the liters per minute), as fast as the gas stations I've paid to fill up from (when connected under the hood or to a wall outlet to DC converter), it vibrates way less than any tire compressor I've used, is way more quiet, and since it makes quick work of any OEM tire size on a passenger vehicle, it doesn't get stifling hot like any compressor I've ever used before it. The last compressor would take roughly 8 minutes and it would be burning hot. By 8 minutes with this compressor I can put 75 psi worth of air split between 3 tires. Determine the psi inaccuracy of the digital gauge, set it and you can walk away without worry of over inflating the tire. Just remember that it doesn't power itself off. On a BMW X3 I've never looked at the tire size. So I apologize for not being more specific, but the compressor inflates at the same rate at 10 psi as it does above 35 psi. It's the only compressor I've ever used that doesn't slow down at all as the tire inflates. With my last compressor which ran at half the liters per minute, that thing would shake and holler trying to squeeze out 1 more psi above 30, and it seemed like it took nearly 1 minute per psi above 30. Not so with the compressor you're looking at. It's roughly 6 seconds per psi, 3 seconds per 0.5 psi. I video recorded it in 2 sessions, and it was the same exact amount of seconds per psi on both fill ups, regardless of how high the pressure got. This is truly a good compressor. Just know what your getting, know for big performance you need the power from under your hood or from a wall outlet to DC converter, and again, check the psi inaccuracy of the digital gauge so you don't have to be so concerned about checking for pressure accuracy with each tire you fill up. If you just want to use your interior outlet you honestly will get no better results as a cheap unit. If you don't have an RV or big aftermarket mud tires, this is all you need unless you need something that fills a standard tire quicker than 2-3 minutes. With some 4x4 trucks with a completely flat OEM tire you may have to wait in the 4-6 minute range, but that's still impressive for this little compressor.

Quite works fast

MUY BONITA CALIDAD

Poor performance 😞

Excellent product. A+++