What method do you use to deflate your tires?
 

https://www.youtube.com/watch?v=nSlROYeRUkA

I use Staun deflators. They work like a champ!

Simple and cheap. I put one on each tire and by the time I get to the first one, it's aired down to about where I need it. When I'm done with the first, I move to the second and it's about done... and so on...

https://teraflex.com/shop_items/528f...d962f416e72f77

Same here.

I like the ARB/Currie EZ Tire Deflators myself.

Staun are expensive but you can't beat the convenience of "set it and forget it". I never have to worry about letting out too much air.

I've used the set-it forget it deflators and for the most part they work but they do fail too and aren't very accurate tire to tire. The ARB style where you pull the valve core works really well and is fast. But with all those that I have used I ended up building my own 4 tire inflation\deflation setup. I hook up all 4 tires and can have them deflated in 4min (30lbs to 15lbs). I can also inflate my 4 37's in 2.30 min with my shop compressor or CO2 or my OBA takes about 5min(that's all 4 tires)
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I've tried just about all..new rims drill and use RIMROCK RAD air valves, already have 2 valve stems or don't want to drill use Jantz J-Flaters

Both the fastest and easiest I have used.

Where's the supply list on the multi tire inflate/ deflate? Are you using 1/2" air hose to get those tires filled in 2.5 mins?? I've got a large compressor but I don't see it filling 4 tires that quickly without a larger supply hose.