Torque Towing Capacity Calculator

Australian Torque Towing Capacity Calculator

Engine Torque (Nm):

Engine RPM:

Final Drive Ratio:

Vehicle Weight (kg):

Towing Gear Ratio:

Towing Capacity: 0 kg

How to Use the Australian Torque Towing Capacity Calculator: A Practical Guide

Calculating your vehicle's towing capacity is crucial for safe towing across Australia's diverse terrain. Our torque-based calculator helps you determine safe limits while complying with Australian Design Rules (ADR). Here's how to use it effectively:

Step 1: Gather Your Vehicle Specifications

Locate your vehicle's torque figure (in Newton meters) and peak torque RPM in your owner's manual. For modern vehicles, check the VIN plate or manufacturer's website for Australian-spec values.

Step 2: Input Technical Details

Final Drive Ratio: Found in your vehicle's specifications (typically 3.0-4.5 for 4WDs)
Towing Gear Ratio: Use your transmission's ratio when in tow/haul mode (usually 1st or 2nd gear)
Vehicle Weight: Use actual kerb weight from weighbridge measurements for accuracy

Step 3: Understand Your Results

The calculator shows three safety ratings:

Red (Below 2000kg): Suitable for small trailers only
Yellow (2000-3500kg): Matches most caravans and horse floats
Green (Above 3500kg): For heavy plant equipment and large boats

Pro Tips for Australian Conditions

1. Always deduct 10% from your result for safety margin
2. Check state regulations - QLD requires separate brake systems above 2000kg
3. Recalculate when adding aftermarket modifications
4. Consider axle load limits and GCM in your final assessment

Remember: This calculator complements but doesn't replace manufacturer specifications. Always verify results against your vehicle's compliance plate and consult a certified engineer for heavy towing applications.