Staun Tyre Deflators (Off-Road, 6-30 PSI)
Airing down four tyres to an even, repeatable pressure by eye and a gauge is tedious and easy to get wrong. Staun's deflators remove the guesswork entirely — screw them on, walk away, and every tyre stops at the same preset pressure on its own.
Key features
- Automatic preset deflation, factory set to 18psi, adjustable across a 6-30psi range
- Accurate to within 1psi
- Adjustment of roughly 3psi per half turn, 6psi per full turn of the cap
- Deflates from 35psi to 18psi in around 3-4 minutes per tyre
- Set of 4 with a leather storage pouch
- Hand-assembled and tested in Australia from brass components
RV use case
This suits owners airing down a tow vehicle or 4WD's tyres before unsealed roads or beach driving, who want all four tyres to land on the same pressure without babysitting a gauge at each valve.
Pros
- Screw on and walk away — all four tyres deflate to the same preset pressure unattended
- Genuinely fast for a passive, non-electric deflator
- Australian-made from brass, built for the conditions they're designed to handle
Cons
- Deflation only — still needs a compressor, like the ARB CKMTA12, for the return trip back to road pressure
- Preset pressure needs to be dialled in correctly before use, an easy step to forget
- Small parts that are easy to misplace without the included pouch
Best for
Owners who regularly air down for beach or outback tracks and want a consistent, hands-off way to do it across all four tyres at once.
Verdict
About as close to set-and-forget as tyre deflation gets — pair it with a decent compressor and airing down stops being a chore.
Staun Tyre Deflators, set of 4 with leather pouch
Close-up of the adjustment cap and lock ring
Deflator fitted to a tyre valve, airing down unattended
Diagram showing the adjusting cap, lock ring and finger grip