Six-wheel drive

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10-wheel Hayes WHDX 70-170 6x6 heavy hauler tractor with one forward and two rear axles

Six-wheel drive, 6WD or 6×6 is a drivetrain configuration of three axles with at least two wheels apiece capable of being driven simultaneously by the vehicle's engine. Unlike four-wheel drive drivetrains, the configuration is largely confined to heavy-duty off-road and military vehicles, such as all-terrain vehicles, armored vehicles, and prime movers.

Various 6x6 heavy hauler and ballast tractor prime movers have had a long history both in the military (as tank transports and artillery tractors), and commercially in logging and heavy equipment hauling both on- and off-road.

Most six-wheel drive vehicles have a forward axle and two at the rear (with only the front pair steering), or three evenly spaced in varying steering configurations. Depending on the vehicle's role, the number of wheels varies between six (in three pairs) and ten (with two in the front and two dual axles with four wheels apiece in the rear). Drive may be limited to the rear two axles for on-road use.

Examples[edit]

Military

Military/Commercial

Commercial

Conversions

  • Six-by-six conversions of four-wheel drive trucks are made, such as the Australian Army's Perentie Land Rover Defender and "Landcruiser Sherman"), as are 6×4 versions (with only front and rear or front and middle axles driven).

Recreational ATV/UTV

  • Polaris Industries has produced a number of 6 wheel drive ATVs and UTVs for many years now, based on a standard Magnum, Sportsman or Ranger with an extra axle and a Cargo Box over the rear wheels.

Concept cars[edit]

Concept car, testbed, and limited production commercial examples include:

Twin front axle

Twin rear axle

Gallery[edit]

See also[edit]

Notes[edit]