Methods and apparatus to determine vehicle weight

A vehicle comprising:

• a suspension system;
• a suspension airbag;
• a pump fluidly coupled to the suspension airbag;
• a motor operatively coupled to the pump;
• and
• a vehicle controller to:
• cause a first motor input to be provided to the motor to cause the motor to adjust a ride height of the vehicle when the vehicle is unloaded;
• cause a second motor input to be provided the motor to cause the motor to adjust the ride height of the vehicle when the vehicle is loaded;
• and
• calculate a weight of the vehicle based on an offset the first motor input and the second motor input.

An apparatus comprising:

• a sensor to:
• measure a first motor parameter in response to a motor raising or lowering a vehicle when the vehicle is unloaded;
• and
• measure a second motor parameter in response to the motor raising or lowering the vehicle when the vehicle is loaded;
• and
• processor circuitry to calculate a weight carried by the vehicle when the vehicle is loaded based on the first motor parameter and the second motor parameter.