Rope choice changes how a winch behaves, how it is maintained and what happens on the rare occasion something parts under load. It is worth more thought than the price difference suggests.
Which One Should You Run?
Synthetic for most vehicles, steel where the line drags over rock and heat. Synthetic rope is lighter, safer when it fails and easier to handle, which covers the majority of recovery work. Steel resists abrasion and heat far better, which still makes it the right answer in specific conditions.
The Safety Difference Is Real
A loaded steel cable stores a large amount of energy. If it parts, that energy releases along the line and the cable travels with it. Synthetic rope stores far less, so a failure tends to drop the line rather than throw it.
That is the reason synthetic has taken over on recreational and light commercial vehicles. It does not make a recovery safe on its own, and a damper still belongs over the line either way, but it changes the consequence of the worst case.
Where Steel Still Wins
Abrasion and heat. Dragging a line over rock, through gravel or across a sharp edge wears synthetic quickly, and the damage is not always visible from the outside. Steel shrugs at the same treatment.
- Rock and gravel: steel resists the abrasion better.
- Heat near the drum brake: steel is unaffected, synthetic can be weakened.
- Long term outdoor storage: steel is not affected by sunlight.
- Chemicals and fuel spills: steel tolerates what synthetic does not.
Handling and Upkeep
Synthetic can be handled without gloves and it floats, coils easily and does not develop the barbs that make steel cable unpleasant to spool by hand. It does need washing out after muddy work, because grit worked into the fibres cuts them from the inside.
Steel needs gloves, every time. It also needs inspecting for broken strands and kinks, and a kinked cable is finished rather than repairable.
Weight is the other everyday difference. A hundred feet of synthetic rope weighs a fraction of the same length of steel cable, and all of that saving comes off the very front of the vehicle where it affects steering feel and front axle load. On a machine already carrying a bumper and a mount, it is noticeable.
Changing Type Means Changing the Fairlead
This is not optional. Synthetic rope runs through a hawse fairlead, which is a smooth plate. Steel runs through a roller fairlead. Putting synthetic through rollers abrades it at every edge, and putting steel through a hawse chews the hawse.
Rope length and diameter are worth confirming at the same time, since a synthetic rope of the same rated strength is usually a slightly different diameter to the steel cable it replaces, and that changes how many layers fill the drum. Check the drum for burrs as well, because a drum that carried steel cable can damage synthetic rope on the very first wrap.
See synthetic rope winches, the wider winch range, or accessories for fairleads.