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Pressure Calculator



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Reducing Tyre Pressures
General Advice
  • In regards to off-road Tyre pressures and preserving tyre life, it's key to remember two points below:

    • heat (caused by over-flexing/overload) is the greatest enemy of a tyre
    • It's air in the tyre that carries the load, not the tyre itself

    To avoid excessive heat build-up caused by over flexing, ensure there is sufficient air pressure in the tyre to carry the load.

    In most conditions your vehicle can be driven off-road at the same tyre pressure as on sealed roads. However, in low traction conditions (ie. Sand), it can be beneficial to slightly reduce tyre pressures to achieve better grip.

    Lowering inflation pressures for improved floatation are only adequate if the tyre maintains sufficient load carrying capacity.

    Reduce Speed – If you are reducing tyre pressures.

    Please note that tyre load, speed and pressures are all interrelated.

    If you want to reduce your pressure whilst maintaining your load, you must reduce your speed. Reducing your pressure without reducing Load or Speed will lead to excessive heat build-up in the tyre.

    Pressures lower than 25psi may be used off-road provided speeds are reduced to 25kph or less, when the tyre has adequate load-carrying capacity.

    Always remember to reinflate your tyres to correct pressure immediately upon returning to sealed roads. Failure to reinflate tyres for highway use will seriously affect vehicle handling and possibly result in tyre failure.

    *Please note: the technical advice given by us is only a recommendation based on the information provided by you. BFGoodrich is not responsible or liable for any damage due to utilisation based on our technical advice.