Guide to 4WD Tyre Pressure – Why do I need to Deflate my Tyres?

For most people, tyre pressures are something that might only be checked on the odd occasion and only topped up when the tyre looks low. However your tyre pressure is really important for a number of reasons and go a long way to help you drive to the right conditions. Lowering your tyre pressures helps in three main areas for off roading. The first is there is an increase in performance and capabilities in your vehicle.

The lower the tire pressure, the more surface area with the ground and the more traction your vehicle will have. The second is that it is a lot easier on your vehicle, the ride isn’t as harsh, and the lower tire pressure absorbs the impacts. Thirdly, it will reduce your chances of a puncture. By lowering your tyre pressure, you are allowing your tyres to mould around the terrain you are on.

How to let your tires down
There are a few ways to let your tires down. One of the main ways is using a tyre deflator, like the Brumby Offroad one. First up, remove your valve cap. Then, mount the deflator by screwing it onto the thread. Loosen and remove the valve core from the stem, this stays within the brass housing. Push and turn the end rod counter clockwise, keep on unscrewing once it grabs the valve.

To release the air, pull the collar back to deflate. Once you have the required pressure all you need to do is the same, but in reverse.

What pressure should I run in my tyres?
The pressure you need in your 4wd varies from each terrain. We have put together a basic guide below, however please note this can change depending on your individual setup.

  • Dirt Roads 25-30 PSI
  • Mud/Rocks/General 4wd terrain This depends on your individual set up, however 18- 25 PSI is a good guide.
  • Soft Beach/Sand 15-20 PSI

Your Tyre Pressure Changes
It is important to mention that your tyre pressures actually change! The air pressure increases and decreases as your tyres warm up and cool down. For example, if you start in the morning on the sand where you have let your tyres down to 12-16 PSI, and as the day warms up your tyres could end up around 20- 24 PSI.