Track system for vehicle

A track system for a vehicle, the vehicle including a resiliently deformable track defining guide lugs, drive lugs and at least one track-inner path surface positioned between the guide lugs and the drive lugs, the vehicle having a drive axle, the track system comprising:

• a drive sprocket suitable for being placed in communication with the resiliently deformable track, the drive sprocket including:
• a hub structured to be connected to the drive axle;
• a plurality of teeth extending radially outward of the hub and adapted for engaging with the drive lugs of the resiliently deformable track;
• and
• a rim at least indirectly attached to the hub, the rim including a resiliently deformable tread for engaging with the at least one track-inner path surface;
• wherein the resiliently deformable tread is positioned in contact with the at least one track-inner path surface such that when the track is tensioned to a rated tension, the at least one track-inner path surface exerts a pressure against the tread, thereby deforming the tread radially inwardly towards the hub.