void function ( String arg0 ) { this . treadDepth = arg0 ; }
sets tread depth . concode_field_sep String size concode_elem_sep String wheel concode_elem_sep String location concode_elem_sep String brand concode_elem_sep String treadDepth concode_field_sep void setWheel concode_elem_sep String getSize concode_elem_sep String getLocation concode_elem_sep void setBrand concode_elem_sep void setSize concode_elem_sep void setLocation concode_elem_sep String getBrand concode_elem_sep String getTreadDepth concode_elem_sep String toString concode_elem_sep String getWheel