Tire Pressure for Beach (deep soft sand)

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bobvance2005

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Going to the beach soon. What tire pressures work for these vehicles? Some guides say between 15-20psi, some say between 10-15psi... They all say even a few psi lower in that range makes a huge difference.

But it might be a little different with our trucks, given they weigh ~6000lbs. How low can we go without risk of losing a bead? I'm running 275/70R18 Falken Wildpeak AT3Ws on stock FX4 wheels right now.
 
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I have run 15 psi successfully on the beaches of the Outer Banks in NC with no issue. I did air up right away before driving on pavement. I see some people driving a few miles on paved roads without airing back up and it seems like an issue waiting to happen.
 
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I also ran 15psi in soft sand on the Outer Banks without issue. That was after I learned the hard way that street pressures were a bad idea. At the time I had the factory 275/55R20 tires.
 
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I use 15 in beach sand and avoid anything stupid. A Hy-lift recovery jack with slings to pick up each wheel is good insurance. With that and a shovel, you'll get out of most anything. Not sure with low profile tires though - never took anything like that on sand.
 
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bobvance2005

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Went with 15psi on the Falken Wildpeak AT3Ws (275/70R18) E-rated tires. Figured the truck is heavy, so you don't need to go down to 10-12psi that Jeep guys recommend, but the E-rated tires mean stiffer sidewalls so you do need to go down more than the 20psi that some truck folks recommend. 15 sounded right given those considerations, and I had no trouble. Did a lot of beach driving in both deep, soft sand, and hard-pack.

No problems. Saw a bunch of other people in various rigs (various crossovers, an F150, a Tacoma, cement mixer) getting stuck and having to be pulled out though. Guessing they didn't appreciate the necessity of airing down.
 
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