Best digital pressure gauge?

[MakaveliX]

Looking for a new tyre pressure gauge as my old Topeak seems to have lost it's calibration slightly. ( either that or the nozzle is slightly blocked as it now reads under my analogue pump when previously they would always read the same )

I would like a digital one.
To be honest I may just go Topeak again as it was brilliant, let hardly any air out if at all when checking pressure and was always what I would perceive to be accurate

thanks

Edited by MakaveliX on Monday 4th December 16:22

[Pica-Pica]

I have always used this (eBay picture is shown). It reads similar to my TireTek analogue, and matches my TPMS when that is warmed up after a few miles. It is an older Halfords gauge and has been very good, I don’t think they sell them anymore.
The issue is; do you want accuracy (true to the real value), or do you want precision (lack of variability)? While desirable to have both, I tend to set the tyres to give the ride and feel that I am happy with. Then I remember and use those values.

[E-bmw]

Pica-Pica said:

The issue is; do you want accuracy or do you want precision

Surely, they are actually one & the same thing?

[Glosphil]

E-bmw said:

Pica-Pica said:

The issue is; do you want accuracy or do you want precision

Surely, they are actually one & the same thing?

Perhaps he means repeatability?

[MakaveliX]

Thanks for the input.
Yes I assume consistency and accuracy are different.

The main thing is that you can spot if a tyre is under what it should be by comparing them to the others.

Consistency is probably more important. Lets say if you check it once and you get 35psi, check it again and get 37psi, then you have an issue with consistency..

In that regard the Topeak has been excellent since mid 2021 so will probably just get another one of them.

[Pica-Pica]

Glosphil said:

E-bmw said:

Pica-Pica said:

The issue is; do you want accuracy or do you want precision

Surely, they are actually one & the same thing?

Perhaps he means repeatability?

No. Wikipedia has it correct.
‘In the fields of science and engineering, the accuracy of a measurement system is the degree of closeness of measurements of a quantity to that quantity's true value. The precision of a measurement system, related to reproducibility and repeatability, is the degree to which repeated measurements under unchanged conditions show the same results. Although the two words precision and accuracy can be synonymous in colloquial use, they are deliberately contrasted in the context of the scientific method.’
… and

[trickywoo]

I’ve had a Draper 01071 for a while and been pleased with it.

Readily available for around £10.

[Bainbridge]

trickywoo said:

I’ve had a Draper 01071 for a while and been pleased with it.

Readily available for around £10.

Is the battery easy to replace on this model?

My AA one was very difficult to change batteries, in fact I don't think it was designed to have them changed.

[S6PNJ]

I bought a Halfords one a couple of years after reading a few reviews etc. Might even have read this review:
https://www.carbuyer.co.uk/car-care/158455/best-pr...
Bought one of these (click for bigger pic)


Have been happy with it so far - still on the same battery.

[trickywoo]

Bainbridge said:

trickywoo said:

I’ve had a Draper 01071 for a while and been pleased with it.

Readily available for around £10.

Is the battery easy to replace on this model?

My AA one was very difficult to change batteries, in fact I don't think it was designed to have them changed.

Yes. It’s two AG13 button style behind a clip cover. I’ve not had to change them yet. Weekly checks on 8 tyres over a couple of years I think.

[TwinKam]

S6PNJ said:

I bought a Halfords one a couple of years after reading a few reviews etc. Might even have read this review:
https://www.carbuyer.co.uk/car-care/158455/best-pr...
Bought one of these (click for bigger pic)


Have been happy with it so far - still on the same battery.

These are brilliant. Used professionally daily.

[Bainbridge]

trickywoo said:

Yes. It’s two AG13 button style behind a clip cover. I’ve not had to change them yet. Weekly checks on 8 tyres over a couple of years I think.

Thanks, I'll ask father Christmas for one.

[MakaveliX]

Can digital gauges lose calibration and accuracy too ?

[E-bmw]

MakaveliX said:

Can digital gauges lose calibration and accuracy too ?

Yes, they can but they are more robust than analogue gauges & will almost certainly retain sufficient accuracy (way more than analogue) over their expected life time.



The internals of a small gauge are tiny & fragile.

[dhutch]

PCL Digital Tyre Pressure & Tread Depth Gauge DTPG7 - £15-20
https://www.ebay.co.uk/itm/131770564212?
https://www.ebay.co.uk/itm/276282772994?


Equally, I bought a few of the £5 Halfords ones for my girlfriend and two siblings and I must say I cant fault it for the money.
Ours is still working well 6 years later on the original battery, used regaurly to check the stupidly low profile pothole hating wheels her Ti spec Fiesta diesel came with.
https://www.halfords.com/tools/garage-equipment/br...

[BikeBikeBIke]

Are the cheap digital gauges that claim 1% accuracy as good as they claim?

like the one on this:
https://amzn.eu/d/iSWlacT

I bought a 3-60psi one to screw into my pump in place of the mechanical one but I'm wondering if the 3-250psi ones are just as accurate.

It's used for bikes, cars and critically paddleboards. And for the paddleboards it must remain within 2psi at ~15psi, that's kind of critical or my compressor is gonna do some damage.

Is it flawed logic that a digital 3-60 will be more accurate at 15psi than a digital 0-250? I'm sure it would with a mechanical one, but have no idea how digital ones work.

[richhead]

https://www.demon-tweeks.com/uk/m-a-horne-professi...

Not cheap, but my goto.

[E-bmw]

BikeBikeBIke said:

I bought a 3-60psi one to screw into my pump in place of the mechanical one but I'm wondering if the 3-250psi ones are just as accurate.

Is it flawed logic that a digital 3-60 will be more accurate at 15psi than a digital 0-250? I'm sure it would with a mechanical one, but have no idea how digital ones work.

As both will display to one decimal point the display will be just as accurate for both, as to whether the actual pressure sensor in the gauge is more accurate it is impossible to tell without extensive testing against a known accurate reference.

When picking mine I stayed within the range up to which I am ever likely to use, and as I have a motorhome that needs 75psi in the rears I went to 0 - 120 PSI IIRC.

[trickywoo]

richhead said:

https://www.demon-tweeks.com/uk/m-a-horne-professi...

Not cheap, but my goto.

Do you run below 30psi?

[richhead]

trickywoo said:

richhead said:

https://www.demon-tweeks.com/uk/m-a-horne-professi...

Not cheap, but my goto.

Do you run below 30psi?

If you go direct to the manufacture you can tell them what range you need. From memory the one shown will go higher, but they only guarantee max accuracy upto 30, still be way more accurate than others.