Axle Types: Single, Tandem & Tri-Axle
Axle configuration matters more on a car trailer than most other trailer types, because the load is concentrated, heavy, and expensive if something goes wrong.
Single Axle
Suited only to light vehicles — small cars, motorcycles-with-sidecar-style loads — where total loaded GTM stays well under 2,000kg. Rare for general car-trailer use given how quickly a mid-size or larger vehicle exceeds a sensible single-axle capacity, and offers no redundancy if a tyre fails mid-trip with a car on board.
Tandem Axle
The standard configuration for car trailers carrying a typical passenger vehicle — four wheels distribute the load, track more stably at highway speed with a heavy, high centre-of-gravity load on board, and provide a real safety margin: if one tyre fails in transit, the trailer stays supported on the other three rather than dropping a loaded vehicle onto the road.
Tri-Axle
Used for heavier vehicles or dual-vehicle car trailers where GTM pushes toward the top of the light-trailer bracket. Adds tare weight and cost but spreads load across six tyres rather than four — worth it specifically when the vehicle(s) being carried genuinely demand it, not as a default upgrade.
Questions & Answers
Is single axle ever appropriate for a car trailer?
Only for genuinely light loads — small cars or similar under roughly 2,000kg loaded GTM. For a typical mid-size or larger vehicle, tandem is the practical standard given the stability and tyre-failure redundancy it offers with a valuable load on board.
Do I need a tri-axle car trailer?
Only if carrying a heavier vehicle or multiple vehicles pushes loaded GTM toward the top of the light-trailer weight bracket. For a single typical passenger vehicle, tandem axle is almost always sufficient.