"Pressure Guard" for tyres

[SlowRider]

Noticed an advert in the motoring Times today for Pressure Guards (www.auto-unique.co.uk/prodtype.asp?PT_ID=37&strPageHistory=cat).

They are supposed to change colour when tyre pressure changes. This provoked me to checking my tyre pressures (OK), and the wife's. Hmmm Last checked 2+ years ago she tells me and running at about 50%!!

Has anyone tried these things?

J

[bobfrance]

Nope, but if they work I'll certainly buy some!

[simpo two]

bobfrance said:

Nope, but if they work I'll certainly buy some!

'the coloured indicators will give you a visual warning as soon as just 2psi is lost...'

Given their position they're more likely to be detecting a certain *volume* of air - but can you reset these things afer they've changed?

[SlowRider]

simpo two said:

'the coloured indicators will give you a visual warning as soon as just 2psi is lost...' Given their position they're more likely to be detecting a certain *volume* of air - but can you reset these things afer they've changed?

Apparently you can.

My concern is that its more like 5 psi before theres a clear noticeable change.

[simpo two]

SlowRider said:

My concern is that its more like 5 psi before theres a clear noticeable change.

Which if you start with 22psi is a 23% loss!

[nICHOLAS bLAIR]

Sold these in Oz a few years ago, I'm surprised it's taken so long to get them here.

[SlowRider]

nICHOLAS bLAIR said:

Sold these in Oz a few years ago, I'm surprised it's taken so long to get them here.

but do they work?