Traction control method for a rotary mixer

A method of traction control for a rotary mixer having four independently driven wheels, the method comprising:

• operating a drive system for the rotary mixer in a default pressure balance mode of operation for ground or road traction conditions where none of the four wheels break traction and spins, wherein in the pressure balance mode of operation each of four independent hydrostatic pumps are adjusted to equalize a pressure in each of four independent hydrostatic drive loops which are associated with each of the four independent hydrostatic pumps, wherein each of the four independent hydrostatic drive loops drives one of the four wheels of the rotary mixer;
• and
• selecting a wheel speed synchronization mode of operation for the drive system for ground or road traction conditions where at least one of the four wheels breaks traction and spins, wherein in the wheel speed synchronization mode of operation the pressure in each of the four independent hydrostatic drive loops develops independently to keep a wheel speed of each one of the four wheels equalized with each other.