Driving & travel
Towing payload margins Calculator
Compare entered actual masses with plated vehicle and trailer limits. This free towing payload margins calculator shows the calculation and its assumptions so you can compare your own figures.
Your results
Compare entered actual masses with plated vehicle and trailer limits.
Calculated outcomes
- Vehicle Actual Kg
- 2,135 kg
- Trailer Actual Kg
- 1,600 kg
- Combination Actual Kg
- 3,660 kg
- Vehicle Margin Kg
- 365 kg
- Trailer Margin Kg
- 400 kg
Assumptions and estimates
- Method: Vehicle actual mass includes nose load. Combined mass adds trailer gross mass and subtracts nose load once to avoid double counting.
- Entered plated limits must match the specific vehicle and trailer. Axle loads, hitch limits, braking, driver licence permissions and legal towability are not assessed.
Useful next steps
- Use Compare options to test an alternative side by side.
- Copy, print or download a record of this calculation when you need one.
Reports open your email app addressed to s@s1.ie with the public page address only. Your inputs are never added.
How the towing payload margins calculation works
Vehicle actual mass includes nose load. Combined mass adds trailer gross mass and subtracts nose load once to avoid double counting.
Entered plated limits must match the specific vehicle and trailer. Axle loads, hitch limits, braking, driver licence permissions and legal towability are not assessed.
Using this calculator
- Enter your own figures in the labelled inputs. Keep the currencies, units and time periods consistent.
- Choose any applicable rate profile, pattern or assumption shown for this tool. Open additional inputs when relevant.
- Review exceeds entered mass limit and train margin kg, then read the stated assumptions and eligibility conditions before using the result.
Worked example
This is a static example using illustrative inputs, not facts about you or today’s date. The displayed eligibility selections and assumptions apply only to this example.
See example inputs
- Vehicle gross plated limit (kg)
- 2500
- Vehicle kerb mass (kg)
- 1800
- Occupants including driver (kg)
- 160
- Vehicle luggage (kg)
- 100
- Trailer nose load on vehicle (kg)
- 75
- Plated train limit (kg)
- 4500
- Vehicle trailer towing limit (kg)
- 2000
- Empty trailer mass (kg)
- 600
- Trailer goods mass (kg)
- 1000
- Trailer plated gross limit (kg)
- 2000
- Exceeds Entered Mass Limit
- No
- Train Margin Kg
- 840 kg