Driveline windup

A pull to the right or left when driving or braking could trigger windup caused by mismatched tire tread/sizes.

[1] H-drives do not use axles but rather individual wheel stations, carried on a punt or backbone chassis.

Unlike a typical transfer box for permanent four-wheel drive, there is no differential action front-to-back.

The varying track radii mean that when the vehicle drives in a curve on firm tarmac each wheel travels a different distance.

[2] Excess windup could easily lead to a broken gear in the bevel or hub gearboxes.