pressure gauge accuracy

[czakal]

So it's been a while since I remembered to check my tyres and my gauge says they're much below recommended pressure. How much accuracy should you expect from cheaper tyre pressure gauges? I have the Halfords Long Nose and MCN says it is accurate to less than 1 psi

https://www.ride.co.uk/upload/Ride%20Magazine/Product%20test%20pdfs/9%20SEP08%20Pressure%20gauge%20test.pdf

Is it realistic to expect such a level of accuracy from a pretty cheap tool? Some people like my former instructor didn't trust them very much.

Seb

[RhynoCZ]

Simple job, ask your mates, and or your local garage, and use their gauges as well. There is a very small possibility, that all the tyre pressure gauges, you are going to try, are going to be inaccurate in the same way as yours.

I've got a very cheap gauge with accuracy of 0.1 BAR, which is accurate more than enough. And I have taken the measurements with this, and 2 other fuel stations compressors. Shell's compressor was a bit off, but then, it does not really matter.

This one:
https://www.gsfcarparts.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/9/8/983aa0890.jpg
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'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Taught2BCauti...]

I have a cheap digital one, similar to the picture above, and it normally lives in the boot of my car. Whenever I have to get a new tyre fitted at my local tyre fitter's, I check the tyre pressure with my gauge after they have checked it with theirs - because they have their's calibrated every 6 months.

It always reads the same, so that's good enough for me.

The gauges on my compressor, and my portable electric inflator are at least 10psi out.
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www.TheFutureIsHere.eu

[MCN]

https://www.halfords.com/motoring-travel/tools-diy/tyre-inflators-pressure-gauges/halfords-mini-keyring-tyre-pressure-gauge

Very accurate and never failed yet.

[Howling TerrorOutOfOffice]

I think Ride magazine did a pressure gauge group test and the £4.99 Halfords one won. [edit] Joint 3rd place.

https://www.ride.co.uk/upload/Ride%20Magazine/Product%20test%20pdfs/9%20SEP08%20Pressure%20gauge%20test.pdf
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The Harry Turner Project

[MCN]

[kramdra]

Precision != accuracy.

I have ordered one of these
https://www.ebay.co.uk/itm/281742933375

[kramdra]

Wrong link, I ordered one of these https://www.ebay.co.uk/itm/171857015978 https://www.ebay.co.uk/itm/171871848478

Which arrived in a massive box.. because its massive 100mm diameter pressure gauge might look a bit odd on a 55mm diameter foot pump

[MCN]

[kramdra]

Trade off between a cheap higher quality 1% 160psi gauge or a more expensive 2.5% 60/100. 5 quid delivered is quite fucking good Anyway 1.6 psi error is far more accurate than necessary for a tire and a bit pointless unless your also comparing temperature.

I also suspect the ride test was a load of made up bollocks.. compare the stated resolution against the measured accuracy

[MCN]