A track system for use with a vehicle having a chassis and a drive shaft extending laterally outwardly from the chassis for driving the track system, the track system comprising: • an attachment assembly connectable to the chassis of the vehicle, the attachment assembly having a pivot extending laterally outwardly therefrom; • a multi-member frame assembly disposed laterally outwardly from the attachment assembly, the multi-member frame assembly including: ∘ a leading frame member pivotably connected to the attachment assembly via the pivot for pivoting about a pivot axis; ∘ a trailing frame member pivotably connected to the attachment assembly via the pivot for pivoting about the pivot axis, the trailing frame member pivoting independently from the leading frame member; ∘ a leading wheel-bearing frame member at least indirectly pivotably connected to the leading frame member; ∘ a trailing wheel-bearing frame member at least indirectly pivotably connected to the trailing frame member; • a damper interconnecting the leading frame member and the trailing frame member; • a leading idler wheel assembly rotatably connected to the leading wheel-bearing frame member; • a trailing idler wheel assembly rotatably connected to the trailing wheel-bearing frame member; • a first plurality of support wheels at least indirectly connected to the leading wheel-bearing frame member; • a second plurality of support wheels (290b, 290c) at least indirectly connected to the trailing wheel-bearing frame member; • a gearbox having an input shaft operatively connectable to the drive shaft of the vehicle and an output shaft; • a sprocket wheel operatively connected to the output shaft of the gearbox; and • an endless track extending around the sprocket wheel, the leading idler wheel assembly, the trailing idler wheel assembly, and the pluralities of support wheels, and drivable by the sprocket wheel, characterized in that: • the endless track has leading, trailing and ground engaging edges (390, 394, 392), • a first angle is formed between the trailing and ground engaging edges, and a second angle is formed between the leading and ground engaging edges, • the first angle has a bisector, and • the bisector of the first angle passes below the pivot axis. • an attachment assembly connectable to the chassis of the vehicle, the attachment assembly having a pivot extending laterally outwardly therefrom; • a multi-member frame assembly disposed laterally outwardly from the attachment assembly, the multi-member frame assembly including: ∘ a leading frame member pivotably connected to the attachment assembly via the pivot for pivoting about a pivot axis; ∘ a trailing frame member pivotably connected to the attachment assembly via the pivot for pivoting about the pivot axis, the trailing frame member pivoting independently from the leading frame member; ∘ a leading wheel-bearing frame member at least indirectly pivotably connected to the leading frame member; ∘ a trailing wheel-bearing frame member at least indirectly pivotably connected to the trailing frame member; ∘ a leading frame member pivotably connected to the attachment assembly via the pivot for pivoting about a pivot axis; ∘ a trailing frame member pivotably connected to the attachment assembly via the pivot for pivoting about the pivot axis, the trailing frame member pivoting independently from the leading frame member; ∘ a leading wheel-bearing frame member at least indirectly pivotably connected to the leading frame member; ∘ a trailing wheel-bearing frame member at least indirectly pivotably connected to the trailing frame member; • a damper interconnecting the leading frame member and the trailing frame member; • a leading idler wheel assembly rotatably connected to the leading wheel-bearing frame member; • a trailing idler wheel assembly rotatably connected to the trailing wheel-bearing frame member; • a first plurality of support wheels at least indirectly connected to the leading wheel-bearing frame member; • a second plurality of support wheels (290b, 290c) at least indirectly connected to the trailing wheel-bearing frame member; • a gearbox having an input shaft operatively connectable to the drive shaft of the vehicle and an output shaft; • a sprocket wheel operatively connected to the output shaft of the gearbox; and • an endless track extending around the sprocket wheel, the leading idler wheel assembly, the trailing idler wheel assembly, and the pluralities of support wheels, and drivable by the sprocket wheel, • the endless track has leading, trailing and ground engaging edges (390, 394, 392), • a first angle is formed between the trailing and ground engaging edges, and a second angle is formed between the leading and ground engaging edges, • the first angle has a bisector, and • the bisector of the first angle passes below the pivot axis.