Wet sand rear tire psi?

[EastMT]

Someone mentioned increasing the rear tire pressure when the sand is wet for less bit. How high of a PSI would you go? 33” and beadlock if it makes a difference.

 

[Looney Duner]

I run a 33" tire as well, 10-13 psi while dry, depending on conditions, and when it's wet I'll typically run somewhere around 15-18. It definitely makes a difference. You will have to play with the pressure to find the sweet spot, basically, when the sand is wet add a little pressure and test drive, keep bumping the pressure up till the car doesn't bog and that's pretty much it. 

It's going to be different for everyone, based on h.p. weight of car, driving style, wheel width, etc.

 

[EastMT]

I run a 33" tire as well, 10-13 psi while dry, depending on conditions, and when it's wet I'll typically run somewhere around 15-18. It definitely makes a difference. You will have to play with the pressure to find the sweet spot, basically, when the sand is wet add a little pressure and test drive, keep bumping the pressure up till the car doesn't bog and that's pretty much it. 

It's going to be different for everyone, based on h.p. weight of car, driving style, wheel width, etc.

Thank you!

 

[lincster]

17-18psi for me all the time, wet or dry.

Try to remove some stress on the drive train is what I do.

 

[BaBaBouy]

Bring your thermal undies, highs are in the mid 50s with lows in the low 30s, wind has been howling for two weeks.

My wet sand tire set up started with 8lbs up front & 18lbs in the back (usually ending up at 7lbs front & 16lbs back).

 

[Richard h]

17-18psi for me all the time, wet or dry.

Try to remove some stress on the drive train is what I do.

Also makes for great "bead lock by air pressure".

 

[John@Outfront]

i run 13-15 dry and 15-17 wet

2200 lb funco

 

[ANGRYBUTTCRACK]

I always ran 18-22 psi in all weather as I liked a solid rear end to slide it around.

abc

 

[L.R.S.]

3500lb car, 16psi front 20psi rear dry and 20psi front, 25psi rear for wet sand.

 

[FOG]

If I remember correctly St. Anthony sand is a little more coarse than Glamis sand so your car will float better to start with.  
That being said I would do what others have suggested by starting at one point and then adjust the pressure.  
One additional point is that the cold weather can affect how stiff the tire is, especially sidewall flex. So a little trial and error may be your best bet. 

 

[EastMT]

Thanks for all the info and help guys! I started at 15 and now up to 18. It is amazing how much difference changing the pressure makes. I was at 10-12 last year. 
The weathers been changing. I got snowed on twice on the drive over. It hailed 5 minutes after I got to IDRV. 

@BaBaBouy  you were right, it’s a little chilly before sunset and first thing in the morning. I went to the walmart in Rexburg and Mimi from the Drew Cary show said they sold all their thermals in February. 

 

[BaBaBouy]

Did you cruise through Saint Anthony on your way in, saw a toy hauler with Montana plates and a trailer hitch on the back?

 

[J Alper]

I run 20-25 psi up front, and 15psi in the rear  dry,  

20-25 psi up front and 25 psi in the wet sand,  

 

[EastMT]

Did you cruise through Saint Anthony on your way in, saw a toy hauler with Montana plates and a trailer hitch on the back?

Not me. I went I-15 to L33 then one exit north on the 20. My rig stands out from everyone else here. Think somewhere in between Standford and son and Beverly hillbillies.

 

[EastMT]

If I remember correctly St. Anthony sand is a little more coarse than Glamis sand so your car will float better to start with.  
That being said I would do what others have suggested by starting at one point and then adjust the pressure.  
One additional point is that the cold weather can affect how stiff the tire is, especially sidewall flex. So a little trial and error may be your best bet. 

Thanks. I didn’t consider the sidewall flex being affected by the temperature, good point.