In this video, we compare how long it takes six commonly used air compressors to inflate four 35” tires simultaneously, using the Gnu Brothers Off Road GnuMatic fourway inflation/deflation system.

For each test, we lowered the vehicle’s tire pressure to 15 psi. Each compressor was cold at the start of the test. The engine was on, allowing the corresponding battery to provide approximately 14V to the air compressors. The compressors were then timed to determine how quickly they could inflate the four tires simultaneously back to 30 psi.

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00:00 Introduction
00:36 Smittybilt 2780
01:44 Viair 400PA
02:45 ARB CKMA12 (Single)
03:42 Viar 440P
04:31 Smittybilt 2781
05:07 ARB CKMTA12 (Twin)
05:42 Results & Summary