Over 60 Years Experience with Towing Brackets and Trailers

Motorhome Axle Load Calculation Form.

Overloaded lorry

The obvious risk of an overloaded vehicle!

Many motorhome manufacturers build their products to fairly tight specifications, and this includes overall weight limits. As such, we often get asked if we think a particular motorhome will be able to cope with or bear the weight of additional products. Now this is easy if you are adding something to the middle of the van such as a roofbox or new watertank, but when you add a scooter rack and scooter to the back of the motorhome, complications occour.

Because we want our customers to be safe and roadworthy when using our (or anybody elses) products, we have devised a formula for calculating safe axle loadings given the individual parameters of your motorhome. You see, you can't just add the weight of the scooter and rack to the overall weight of the van because the moment around the rear axle effects weight distribution. Very often, the overall weight of the unit may be within limits, but the rear axle can be significantly overloaded and therefore dangerous. The diagram and form below details the information we need to do this calculation and once it has been sent to us, we can quickly tell you your safe limits.

This is a free service, but obviously we hope to sell you a towbar and scooter carrier in the process!

Please fill in the relevant dimensions so that we can do the relevant calculations. We will then contact you by phone or e-mail with details of your safe working limits.

Tip from the top

Having done this for a couple of years now, I have a few tips that you might find helpful:

  1. If the total of the Actual front and Actual rear axle load add up to more than the Maximum Gross weight of the vehicle, you are unlikely to be able to carry the additional weight of a scooter.
  2. If when measured, the Actual rear axle load is more than the plated maximum but you have spare capacity on the front, some rearranging of the load may be necessary.
  3. If you already have a towbar fitted and the stated maximum download is less than the weight of your proposed scooter you will need a new towbar, or a lighter scooter.

One Final Note: Please do take the time to get actual front and rear axle weights and not just use what is quoted in the manufacturers handbook, the difference is sometimes surprising! Please note that without all of the required information entered below, we are unable to provide an accurate estimation of the effect of adding a towbar, scooter rack and scooter to your vehicle and your email may not be responded to.

Alko Dimensions Diagram

Motorhome Axle Loads and Dimensions Diagram


Motorhome Axle load Submission Form

* = required fields.

Vehicle Make: Model:        Year:   

Maximum Mass of motorhome:*

F max kg Chassis Data
Maximum front axle load:* R1max kg Chassis Data
Maximum rear axle load:* R2max kg Chassis Data
Actual front axle load:* R1 Kg From Weighbridge
Actual rear axle load:* R2 Kg From Weighbridge
Wheelbase of motorhome:* w mm Chassis Data
Overhang from rear axle to rear of bumper/valance:* h mm From Measurement
Mass of Motorbike/Scooter: mS Kg Scooter data
Mass of WATLING MotoRack: mM 30 Kg MotoRack data
Do you already have a towbar fitted? Yes/ No  


Phone: Country:
Address: Message:


< Back to top