Motorhome Overhang Weight Issue

[andyelbac]

A slightly embarrassing ask here, but having reall issues calculating the potential weight issue on our rear axle wheb using the formula found online. I just don't trust my workings and would appreciate someone who has a better grounding in maths provide me with an answer. Basically, I want to know if carrying 150kg in my rear garage gives me a rear axle overhang weight issue or not. Here are the specs:
Front axle plate limit: 1960kg
Rear Axle plate limit: 2240kg
Wheelbase: 4050mm
Front of MH to centre front wheel: 850mm
Rear wheel centre to back of MH: 1850mm
Max permissable load 4,000kg

 

[Rollingwheels]

I think you need to know what weight is on you front and rear axles when loaded for a trip then you can work out what weight spare capacity you have left then you can use the formula

 

[andyelbac]

Thanks. A question then. If I load up as required and with the rear garage loaded with the max 150kg, and then have it weighed on a weighbridge, does the rear axle weight on the weighbridge take into account the 'additional' weight that has moved from the front axle (as per the formula) or do i still have to do the formula after. In other words, irrespective of the formula, if my rrar axle weighbridge weight is lower than my allowable rear axle weight, am I good to go?

 

[Rollingwheels]

Yes as far as I understand it the formula is to allow you to work out the the theoretical weights that you may want to add but putting it on the weighbridge will confirm if the axle is overloaded or not