Towing Tire Pressure Calculator Australia

Australian Towing Tire Pressure Calculator

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Guide to Using a Towing Tire Pressure Calculator in Australia

Proper tire pressure is the unsung hero of safe towing. Whether you’re hauling a caravan through the Outback or towing a boat to the coast, using a towing tire pressure calculator could mean the difference between a smooth journey and a roadside emergency. Here’s how to get it right.

Why Tire Pressure Matters When Towing

Under-inflated tires generate excess heat, increasing blowout risks – especially dangerous when carrying heavy loads. Over-inflation reduces traction and wears tires unevenly. The Tyre and Rim Association of Australia (TRAA) recommends checking pressure before every tow, as proper inflation:

  • Prevents tire failure on corrugated roads

  • Maintains fuel efficiency

  • Ensures stable handling

Using the Tire Pressure Calculator:

Step-by-Step

  1. Identify Your Vehicle Type
    Select from 4WD, caravan, or trailer. 4WDs typically need higher pressure due to heavier chassis weights.

  2. Check Tire Specifications
    Find your tire size on the sidewall (e.g., LT235/85R16). The calculator adjusts for load capacity differences between light truck (LT) and special trailer (ST) tires.

  3. Weigh Your Load
    Include everything: gear, water tanks, and accessories. Weigh stations at truck stops provide accurate measurements.

  4. Input Current Pressure
    Check when tires are cold (driven less than 2km). Heat expands air, giving false readings.

Pro Tips for Australian Conditions

  • Add 4-6 PSI for unsealed roads

  • Reduce speed by 20% when towing above 32 PSI

  • Check pressure morning and evening in extreme temperature changes

  • Use a quality gauge – service station gauges often lie

When to Recalculate

  • Changing altitude by more than 1,000m

  • Temperature swings over 15°C

  • Adding/removing more than 200kg of load

Remember: While this calculator follows TRAA guidelines, always check your vehicle manual. Combine the calculator’s output with a visual tire inspection. Look for excessive sidewall bulge (under-inflation) or reduced contact patch (over-inflation).

By taking two minutes to calculate proper pressures, you’re protecting your family, your gear, and Australia’s roads. Safe travels!

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