A harvester head (700) may include a roller (100, 102) having a groove (104, 106) and supporting a draper belt (20). The draper belt (20) may include a web (24) and an elastomeric belt guide (28) projecting from web (24), wherein the belt guide has outer side surfaces (42, 44) extending at an angle of no greater than 100° relative to a second surface (34) when the belt guide (28) wraps about the roller (100, 102) within the groove (104, 106). The groove (104, 106) may have inner side surfaces (112, 114), each inner side surface (112, 114) extending at angle of no greater than hundred degrees relative to an outer surface (118) of the roller.
