Generally speaking it is possible to maintain
normal tyre pressures for most types of off-road driving.
However in certain extreme low-traction situations it can
be beneficial to lower pressures slightly to improve grip
although this depends on the surface being traversed.
Mud: In
really muddy conditions lower the pressure to increase
the tyre footprint size and flotation ability.
Snow:
In snow maintain pressures on road. Pressures may be
reduced in severe off-road situations to aid traction.
Rock:
Maintain tyre pressures. Reduced pressures increase
the risk of tyre damage by pinching or cutting.
Sand:
It is possible to lower pressures in loose sand to aid
traction
Water: Maintain
pressures as it is not possible to see what the tyre
may strike under water.
Do not use tyre pressures under 16psi. Reinflate
the tyre as soon as you return to tarmac.
