When buying a motorhome the motorhome weights are to some customers, a little confusing. They are essential parts of motorhome information, to assist in motorhomes being driven safely.

You may have seen the Police pulling lorries and large vehicles of the roads at weigh stations. To check that everything is compliant with the regulations, motorhomes can also be required to take a test.

So, lets investigate what motorhome weight calculations are all about. And don’t forget your motorhome also has limits for its front axle and rear axle too.

Before we start, just a reminder to also make sure you understand what driving licence you need when driving a motorhome.

Motorhome weights

How heavy?

First things to remember is that on a new motorhome, every additional optional items must be subtracted from your available payload. From removable carpets to outside awnings and bicycle racks. They all have a weight that has to be taken into consideration.

When buying a motorhome with a modest payload, with extras, this will reduce the remaining payload available to use.

Safety first

Keeping legal

When using a motorhome it is important to stay within the limits of the motorhomes capability. Also, it is extremely important not to overload your motorhome. In fact, doing so will have a detrimental effect on handling, and performance of the motorhome. Especially the stopping distances, so the overall safety and stability of the motorhome is very important to your safety.

In addition, Insurers may take a dim view if your motorhome is outside the limits recommended for the motorhome. If you have an accident that is down to this, they may not even pay out.

How heavy is the motorhome?

More than you thought?

Quite simply to find out, load up as if you were going away and pop along to a public weighbridge. There are many throughout the UK and they are easy to use. Drive the motorhome onto the weighbridge and you will then have an official certificate of the weight of your motorhome.

MTPLM – Maximum technically permissible laden mass.

This stands for the “maximum technically permissible laden mass” of your motorhome. Sometimes known as “maximum authorised mass” (MAM) or “Gross vehicle weight rating” (GVWR).

This information is usually found your owner’s manual and on the chassis plate. Basically, this is the maximum amount that the motorhome is allowed to carry in total. This typically also allows for passengers on board and any extra stuff you are carrying.

MIRO – Mass in running order

This weight calculation stands for the “mass in running order”. The motorhome’s MIRO typically includes a full tank of fuel and an estimated driver weight of 75kg.

Still not sure?

Please ask us! We will be delighted to help.

We understand that getting the weight within legal and safety parameters may be a concern. Our service department will be happy to help you on any motorhome weight calculation issues.