Tie-Downs
Ratchet vs Cam Buckle Straps
The difference is mechanical advantage, and it is the reason a ratchet strap can destroy the thing it is holding.
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A ratchet strap uses a gear and pawl to multiply the force you apply. A cam buckle uses a spring-loaded wedge to hold whatever tension your arms produced. That single mechanical difference determines everything else.
Quick picks
Tap any row to jump to the full write-up below. Scores are our editorial judgment on published specifications — not a star rating, and not a product we claim to have tested.
| # | Product | Best for | Score | Price |
|---|---|---|---|---|
| 1 | Rhino USA Ratchet Straps (1 in x 15 ft)Use a ratchet when the load is heavy, dense and cannot be crushed — and when you need it to stay tight for four hundred miles. | Dense cargo in a basket | 8.3 | |
| 2 | NRS Heavy-Duty Tie-Down StrapsUse a cam strap over hulls, boxes, boards and bags — the inability to over-tension is the feature. | Anything with a shell | 8.7 |
Prices checked September 25, 2026. Product photographs are representative stock images, not the exact unit. Affiliate disclosure.
#1 · Dense cargo in a basket
Rhino USA Ratchet Straps (1 in x 15 ft)
Use a ratchet when the load is heavy, dense and cannot be crushed — and when you need it to stay tight for four hundred miles.
- Mechanism
- Gear and pawl
- Tension
- Mechanically multiplied
- Best on
- Steel baskets, dense cargo, timber
- Risk
- Over-tensioning
What works
- Reaches and holds far higher tension than hand tension
- Stays tight as a load settles
- The right tool for heavy freight
What doesn’t
- Easy to crush a hull, a box lid or a bag
- Slower to fit and release
- More hardware to fail or seize
Our scoring
8.3overall
#2 · Anything with a shell
NRS Heavy-Duty Tie-Down Straps
Use a cam strap over hulls, boxes, boards and bags — the inability to over-tension is the feature.
- Mechanism
- Spring-loaded cam
- Tension
- Hand tension only
- Best on
- Kayaks, boards, cargo boxes, soft bags
- Risk
- Slipping if the cam is dirty
What works
- Cannot apply enough force to deform what it holds
- Much faster to fit and release
- Fewer parts to seize or break
What doesn’t
- Will not hold heavy dense cargo as securely
- A gritty cam can slip — test it before each trip
Our scoring
8.7overall
The one-line rule
If it has a shell, use a cam strap. If it is dense cargo in a steel basket, use a ratchet.
Kayaks, paddleboards, cargo boxes, soft bags, bicycles in a tray, canoes — cam straps. Lumber, tool boxes, sandbags, firewood, a loaded basket of dense gear — ratchets.
If you are unsure, use a cam strap and add a second one. Under-tensioning with two straps is a manageable problem; crushing a hull is not.
What over-tensioning actually does
On a plastic kayak, a ratchet can press a permanent dent into the hull — worse on a hot day, when the plastic is softer, and worse still if it sits strapped for hours in a car park. The dent changes how the boat tracks in the water.
On a cargo box, excess tension distorts the lid so the gasket no longer seals, which is how boxes start leaking. That damage is invisible until it rains.
On a soft bag, a ratchet crushes the contents and puts all the load into the fabric at the strap line, which is where bags tear.
None of these is dramatic. All of them are expensive and all are preventable by using the right strap.
Owning both
Most people who load a car regularly end up with both, and it is the sensible answer. A four-pack of cam straps lives with the roof carriers; a four-pack of ratchets lives with the hitch basket.
Together that covers everything on this site for the price of one mid-range carrier, and it removes the temptation to use the wrong one because it is the one in the trunk.
For boats, add bow and stern lines to both sets — see how to tie down a kayak.
Common questions
Can I use ratchet straps on a kayak?
Are cam straps strong enough for a loaded roof basket?
Should I own both types?
Sources
Not sure it fits your car?
Our vehicle pages carry the published roof load limit, the roof type by model year, and what actually mounts to it — cited, and honest about what the manufacturer does not publish.
Read next
The Best Ratchet Straps
Ratchet straps ranked, plus how to read a break strength figure properly.
The Best Cam Buckle Straps
Cam straps for hulls and cargo boxes, why hand tension is the point, and how many to buy.
How to Tie Down Cargo
Anchor points, strap direction, correct tension, tail management and the pre-drive checks.
How to Tie Down a Kayak
The full sequence including bow and stern lines, correct tension, and the pre-drive checks.