I've been to Pismo before and had to air down the tires on my 05' F250 and 06' WW FS2600. I now have a lot more wieght, a STOCK Chevy 3500 DRW and a 3axle 18K TH. Question, What is the lowest pressure i should run the truck tires in the sand?? Because im thinking the DRW will perform different than the SRW.
I wouldn't go any lower than 12 to 15 PSI.
But then, I would park the trailer or motorhome in the campground at the entrance to the dunes area, and take the Jeep out on the dunes.
I used to watch the RV guys out there getting towed out. No, thanks, not for me!
But, that's just me. Go have fun!
CM1, USN (RET)
2002 Fleetwood Southwind 32V, Ford V10
Toad: 2006 Jeep Rubicon LJ
Other toad: '06 PT Cruiser, Kar Kaddy dolly
Toy: 1977 Dodge W100 CC SWB, 3/4 ton axles & springs
"When seconds count, help is only minutes away!"
Let out air till the bottom sidewall is about 1/2 the height as the top one, around 10 it gets real exciting. Watch the sharp turns, with that low pressure you can pop a bead easily (and dig 1/2 way to China).
Gordon2448 wrote: I've been to Pismo before and had to air down the tires on my 05' F250 and 06' WW FS2600. I now have a lot more wieght, a STOCK Chevy 3500 DRW and a 3axle 18K TH. Question, What is the lowest pressure i should run the truck tires in the sand?? Because im thinking the DRW will perform different than the SRW.
My 3500 DRW Silverado and 38' Next Level 5-er toy hauler are very similar to your setup in terms of size & weight, and I go to Pismo on a regular basis.
I air down to between 12 & 15 lbs in all 12 tires (6 truck & 6 trailer) and it drives through the sand beautifully.
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2003 Country Coach Intrigue, Cummins ISL 400
Toad: 2006 Jeep Wrangler Unlimited (LJ) toad, with just a few mods...
Other rig: 2005 Chevy Silverado 3500 Duramax Dually / Next Level 38CK Fifth-wheel Toy Hauler w/ quads, sand rail, etc...
I have a set of Staun Deflators that I have set to lower all tires to 15psi. If you;re in the sand a lot, these are a great investment. Just screw them on and enjoy a cold beverage while you wait for the hissing to stop. Repeat on trailer tires.
If the sand is realllly soft, I may go to 12-13. Never below 10, you risk popping the bead below that, and that's no fun in the sand. The dually guys with the big 5ers don't seem to have any more (or less LOL) trouble than the SRW guys.
A good rule of thumb in sand is to measure the sidewall height between the rim bead and the ground, then air down until that measurement is about 75% of what it was at your road pressure. The exact numbers will vary based on tire size, load rating, sidewall stiffness, etc. but that 75% rule is a decent starting point. In my experience that generally puts you around 10-15psi. Be careful when getting near the lower end of that range as it becomes easier to roll a tire off the bead when making a sharp turn.
Also, with duallies, you have to be careful that the tires don't rub as they flex at the bottom. Again, your specific tire/wheel combination will dictate how low you can run them.
I do have the Staun deflators which is a must for the sand. I was just curious if i needed to do anything different regarding the DRW vs SRW. Doesnt look like i need to do anything different. Thanks for all the info.
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