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Not sure if this has been covered before?

Back last winter after buying a trailer i got myself a digital tyre guadge to keep an eye on the trailer tyres instead of taking it to my local Asda to check but I've also used it to check the car after using the one in asda and the digital guadge i got always read one or two points below what asda says.

After putting my new wheels on i filled the front in Asda to 35psi... Digital guadge read 33psi.... Filled rears to 37psi digital read 34psi.

See what I'm getting at here? is the calibration out at Asda or is my guadge nay good?....Anyone else noticed this?

I guess it depends how many times the one at Asda has been driven over...

Bejesus, is this "have a go at spelling" day?

Welly wrote:Bejesus, is this "have a go at spelling" day?

It's hard to gauge.

All the guages on the station airlines are never acurate,
iwouidnt trust any of them,

For indikashun... sorry, indication only...

Another thing is you have to drive to Asda, the tyres will have warmed up - did you try your gauge there, once you got the car home or after half an hour when they'd cooled down?

steve_earwig wrote:For indikashun... sorry, indication only...

Another thing is you have to drive to Asda, the tyres will have warmed up - did you try your gauge there, once you got the car home or after half an hour when they'd cooled down?

In Asda... Clever barsteward ain't i.

Jokes aside i tried it while putting the dust caps back on.... Good point that though.

I bought one of these and a quality tyre pressure gauge a while back:

http://www.amazon.co.uk/gp/product/B001 ... UTF8&psc=1

No more wonky petrol station pumps for my car and bikes!

Guys, unless you can compare it with a calibrated standard, you're just speculating on which guesstimate might be the most accurate.