There are a lot of variables to consider when choosing the proper PSI for your particular setup such as terrain type, driving style, tire size/load rating, overall vehicle weight, etc. Generally speaking, pressures below 10 PSI* are not recommended due to decreased ground clearance and the potential for wheel damage.

*Low tire pressure causes unstable driving characteristics at high speeds. Only lower tire pressure for traction related purposes. Driving with low tire pressure at high speed can overheat tires and cause tire failure.