There isn’t a universal “minimum tow ball weight”; what matters is balanced loading and staying within the limits set by your vehicle and trailer.
In Australia, a common rule of thumb for caravans is around 8–10% of the trailer’s ATM as tow ball download; anything much below about 5% can invite the wobbles.
Never exceed your vehicle’s rated maximum tow ball download or the trailer’s limits—check the placards and the owner’s manuals.
Load heavy items low and slightly forward of the axle, weigh the ball load with a scale, then adjust until it tows straight rather than doing the hula at 100 km/h.
If in doubt, get the rig weighed at a public weighbridge and ask a licensed towing specialist to sanity-check your setup.

Cars For Sale
Cars For Sale
Cars For Sale
Fishing
Caravans For Sale
5Earthmoving Machinery
Fishing
Caravans For Sale
Fishing
Fishing
Fishing
Fishing
Fishing
Fishing
Chandlery Products
Educational Games
2Car Parts and Panels
4Go Karts and Buggies For Sale
Power Boats
Power Boats
Fishing
Fishing
Fishing
10Machine Tool Accessories
10Machine Tool Accessories
10Machine Tool Accessories
49Trailers For Sale
FishingListing your ad only takes a few minutes, and most categories are free.
Post an adA weekly hand-picked round-up of the best bargains, free stuff, and trending listings. No spam, unsubscribe anytime.
Know someone looking to buy or sell something? Send them to Tradingpost, Australia's original marketplace.