der of your vehicle is, for example, permissibly 2 % higher than stated in the sales documents, the load capacity is reduced from 275 kg to 218 kg: 3.500 kg 2.907 kg technically permissible maximum laden mass real weighed mass in running order (+ 2 % compared to the stated value of 2,850 kg) mass of the passengers optional equipment ordered for the specific vehicle sactual load capacity 3*75 kg 150 kg = 218 kg As a precaution to ensure that the calculated pay-mass is actually giv- en, you should therefore take the possible and permissible tolerances for the mass in running order into account when configuring your vehicle. We also recommend that you weigh the laden motorhome on a non-au- tomatic scale before each journey and, taking the individual weight of the passengers into account, determine whether the technically permissible maximum laden mass and the technically permissible maximum mass on the axle are observed. To ensure that the minimum pay-mass is maintained, there is a maximum combination of optional equipment that can be ordered for each vehicle model. In the above example with a minimum pay-mass of 100 kg, the total mass of optional equipment for a vehicle with four permitted seats and a mass in running order of 2,850 kg should not exceed 325 kg: 3,500 kg - 2,850 kg mass in running order - 3*75 kg mass of the passengers - 100 kg = 325 kg maximum permissible mass of optional equipment technically permissible maximum laden mass minimum pay-mass It is important to note that this calculation is based on the default value for mass in running order as defined in the type-approval procedure, without taking into account the permissible weight deviations for mass in running order (see no. 2 above). If the maximum permissible value for the optional equipment of (in the example) 325 kg is almost or completely exhausted, an upward weight deviation can therefore result in the min- imum pay-mass of 100 kg being met mathematically using the default value for the mass in running order, although in fact there is no corre- sponding load capacity. Here, too, an example calculation for a vehicle with four seats, whose real weighed mass in running order is 2 % above the nominal value: 3.500 kg - 2.907 kg - 3*75 kg mass of the passengers - 325 kg = 43 kg technically permissible maximum laden mass real weighed mass in running order (+ 2 % compared to the stated value of 2,850 kg) optional equipment (maximum permissible value) actual load capacity (< minimum pay-mass of 100 kg) In order to avoid such a situation, Dethleffs further reduces the maximum permissible weight of the total optional equipment that can be ordered on a model-specific basis. The limitation of optional equipment is in- tended to ensure that the minimum pay-mass, i.e. the legally prescribed free mass for baggage and retrofitted accessories, is actually available for the vehicle load capacity of the vehicles delivered by Dethleffs. Since the weight of a specific vehicle can only be determined when it is weighed at the end of the line, in very rare cases a situation may arise in which the minimum pay-mass at the end of the line is not guaranteed, despite this limitation of optional equipment. In order to guarantee the minimum pay-mass even in these cases, Dethleffs will check together with your trade partner and you before delivery of the vehicle whether, for example, the vehicle is loaded up, seats are reduced or optional equipment is removed. 6. Effects of tolerances of the mass in running order on the pay-mass Regardless of the minimum pay-mass, you should note that unavoidable production-related fluctuations in the mass in running order – both up- wards and downwards – have a mirror-image effect on the remaining load capacity: If you order our example vehicle (see no. 3. above), for example, with optional equipment with a total weight of 150 kg, the calculated pay-mass based on the default value for the mass in running order is 275 kg. The load capacity actually available may deviate from this value due to tolerances and may be higher or lower. If the mass in running or-