Tire Pressure

[madcratebuilder]

Falken 255/80/17's, E rated, 5500lb vehicle with 128" WB. Chalk test gave me street pressures of 33F and 31R, I drop to 20 when I leave the pavement. More for comfort than traction. Snow/sand I have gone as low as 12psi.

 

[raburton12]

Hello,

When airing down, what pressure do you all run?

Thanks,
Rob

Usually 36psi on the road, but 18-24psi on the unpaved roads around here - the washboard/corrugations on most of them are bad enough to pound the heck out of your suspension if you don't drop the tire pressure. (or they get rough enough to warrant the lower pressure for traction)

Yeah, washboard is what we have a lot of. Thanks for the info.

T RTT ob

 

[Surfscottydog]

A well known 4 x 4 safety instructor on a trip, told all of us followers, a good gauge is to lower what you normally run by 50% + 5.
so if you usually run 50 on the street take it down to 25, then another 5 to 20psi. Seemed like it worked on all of our 3/4 ton trucks with 4 wheel pop up campers on them. This was on wash board and some minor challenges .