Home Safe Driving Tips What would be the Inflation Pressure recommendations for Recreational (4×4) vehicles?

What would be the Inflation Pressure recommendations for Recreational (4×4) vehicles?

by jonckie@arrivealive.co.za

For 4×4 tyres that are frequently exposed to different conditions and extreme stresses, regular tyre checks are crucial.

ON -ROAD

  • Tyres must always be inflated to the on-road pressures indicated in the vehicles manufacturer’s manual.
  • Under- or over-inflated tyres will cause irregular tyre wear and will have different behavior to correctly inflated tyres.

OFF-ROAD

  • On rough terrain, slight under-inflation ( ±10%) is preferable.
  • To prevent ploughing over loose ground, use 50% of the recommended pressure with very low speeds on short runs to avoid heat build-up in tyres.
  • Over sand, 25 – 45% under-inflation improves flotation
  • On mud and snow, pressure reductions over 30% are NOT recommended.
  • Any further reductions below 50% of pressure are not recommended as it provides only slight traction gain while exposing the tyre to structure fatigue.
  • Tyres must always be re-inflated a.s.a.p. to correct working pressure after off-road driving.
  • It is highly recommended that after every off-road trip, the tyres should be removed from the vehicle and the inside of the sidewall should be inspected.
  • Tyre maintenance is critical, and that includes adjusting the tyre pressure to suit the conditions.
  • Deflated tyres allow sand into the rim flanges which damages the rim flanges and bead of the tyres.

[Info via The South African Tyre Manufacturers Conference (SATMC)]

Also view:

4×4 Off-Road Driving Techniques & Safety
4×4 Driving and Vehicle Insurance

Related Articles