Spade Lug Wheels can be fitted in place of standard pneumatic tyres to provide a power unit with a greater amount of traction over the ground. This can be particularly necessary if using a two wheel tractor with an umpowered drag implement such as a plough or adjustable ridger.

Further stability and traction can be achieved by adding twinning rings to the spade lug wheels, which has the effect of doubling the wheel width.