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AIR PRESSURE - CORRECT, UNDERINFLATED & OVERINFLATED

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AIR PRESSURE - CORRECT, UNDERINFLATED & OVERINFLATED

Advantages of Correct Tyre Inflation

Maintaining correct tyre inflation pressure helps optimise tyre performance and fuel economy. Correct tyre inflation pressure allows drivers to experience tyre comfort, durability and performance designed to match the needs of their vehicles. Tyre deflection (the tread and sidewall flexing where the tread meets the road) will remain as originally designed and excessive sidewall flexing, and tread squirm will be avoided. Heat build-up will be managed and rolling resistance will be appropriate. Proper tyre inflation pressure also stabilises the tyre's structure, blending the tyre's responsiveness, traction and handling.

"Correct tyre inflation pressure allows drivers to experience tyre comfort, durability and performance designed to match the needs of their vehicles."

 

Disadvantages of Underinflation

An underinflated tyre can't maintain its shape and becomes flatter than intended while in contact with the road. If a vehicle's tyres are underinflated by only 6 psi it could lead to tyre failure. Additionally, the tyre's tread life could be reduced by as much as 25%. Lower inflation pressure will allow the tyre to deflect (bend) more as it rolls. This will build up internal heat, increase rolling resistance and cause a reduction in fuel economy of up to 5%. You would experience a significant loss of steering precision and cornering stability. While 6 psi doesn't seem excessively low, remember, it usually represents about 20% of the tyre's recommended pressure.

Disadvantages of Overinflation

An overinflated tyre is stiff and unyielding and the size of its footprint in contact with the road is reduced. If a vehicle's tyres are overinflated by 6 psi, they could be damaged more easily when running over potholes or debris in the road. Higher inflated tyres cannot isolate road irregularities well, causing them to ride harsher. However, higher inflation pressures usually provide an improvement in steering response and cornering stability up to a point. Therefore, participants who use street tyres track events and road races run higher than normal inflation pressures.

Tyre pressure must be checked with a quality air gauge as the inflation pressure cannot be accurately estimated through visual inspection.

Maintenance Tips to Increase Tyre Performance, Life and Durability

Check and Adjust First Thing in The Morning.

Set according to the vehicle manufacturer's cold tyre pressure(s) recommended on the vehicle's tyre placard, found on the driver’s side door jam, or in its owner's manual. This must be done before rising ambient temperatures, the sun's radiant heat or even driving short distances temporarily warms the tyres.

Note: Tires on a parked vehicle exposed to direct sunlight will appear overinflated due to the heat absorbed from the radiant energy of the sun. Pressures cannot be accurately set on these tires until all have stabilised in the shade.

What Puncture Safe Will Do

  • Prevents loss of air between rim and trye bead due to excellent inner tyre coverage
  • Tyre pressure is maintained increasing trye life & reducing fuel costs
  • Promotes uniform tread wear

For a full list of benefits click here.