PDA

View Full Version : PSI gauges which one is correct ?


SpankyHam
17-07-06, 05:23 PM
OK I bought one of these foot pumps.

Checked rear tyre pressure : 22 PSI :shock:

Used the little calibrated PSi gauge that mot testers use... :33 PSI

Went to my local BP Garage : 36 PSI ( 2 miles so I doubt that's due to heat)


WTF :shock:

Jabba
17-07-06, 05:27 PM
1. I wouldn't trust the footpump (too inaccurate)
2. I wouldn't trust garage forecourt (too inaccurate plus you have to ride there so tyre will be warm)

Get yourself a Halfords digital guage for about a tenner accurate to +/- 0.5psi :thumbsup:

Filipe M.
17-07-06, 05:45 PM
1. I wouldn't trust the footpump (too inaccurate)
2. I wouldn't trust garage forecourt (too inaccurate plus you have to ride there so tyre will be warm)

Get yourself a Halfords digital guage for about a tenner accurate to +/- 0.5psi :thumbsup:

Do you know where I can find a Halfords near Porto? :roll:

Jabba
17-07-06, 05:52 PM
1. I wouldn't trust the footpump (too inaccurate)
2. I wouldn't trust garage forecourt (too inaccurate plus you have to ride there so tyre will be warm)

Get yourself a Halfords digital guage for about a tenner accurate to +/- 0.5psi :thumbsup:

Do you know where I can find a Halfords near Porto? :roll:

I'll happily send you one*



*subject to the usual commission and exchange rates :wink:

Filipe M.
17-07-06, 05:55 PM
1. I wouldn't trust the footpump (too inaccurate)
2. I wouldn't trust garage forecourt (too inaccurate plus you have to ride there so tyre will be warm)

Get yourself a Halfords digital guage for about a tenner accurate to +/- 0.5psi :thumbsup:

Do you know where I can find a Halfords near Porto? :roll:

I'll happily send you one*



*subject to the usual commission and exchange rates :wink:

Hey, I might take you up on that! :)

Jabba
17-07-06, 05:59 PM
Hey, I might take you up on that! :)

Decent one's are about £10-12, plus postage.

I'm sure you could get something just as good in Porto? :?

Filipe M.
17-07-06, 06:05 PM
Hey, I might take you up on that! :)

Decent one's are about £10-12, plus postage.

I'm sure you could get something just as good in Porto? :?

I've been looking for them for a while, haven't found anything I can rely on. I still have one more place I'd like to go first, but don't have much hope in it... :?

mudge32
17-07-06, 06:26 PM
I've been looking for them for a while, haven't found anything I can rely on. I still have one more place I'd like to go first, but don't have much hope in it... :?

Does Amazon (http://www.amazon.co.uk/gp/product/B0001K9UYG/202-0802972-6530202?v=glance&n=11052651) post to Portugal, or do you have an equivilant?

http://images.amazon.com/images/P/B0001K9UYG.01._SS500_SCLZZZZZZZ_V1121263227_.jpg

Filipe M.
17-07-06, 06:30 PM
I've been looking for them for a while, haven't found anything I can rely on. I still have one more place I'd like to go first, but don't have much hope in it... :?

Does Amazon (http://www.amazon.co.uk/gp/product/B0001K9UYG/202-0802972-6530202?v=glance&n=11052651) post to Portugal, or do you have an equivilant?


](*,) ](*,) ](*,)

Is there anything Amazon doesn't sell?

If this one is reasonably accurate, then I guess I'm sorted! Can you confirm this? Thanks anyway! :D

Oops, no I'm not...

# Delivery Restrictions: This item can only be delivered within the UK

:(

mudge32
17-07-06, 06:36 PM
http://www.amazon.com/s/ref=nb_ss_gw/104-0731104-8832750?url=search-alias%3Daps&field-keywords=digital+tire+pressure+guage :wink:

And hopefully this counts http://www.amazon.com/exec/obidos/tg/browse/-/468634/104-0731104-8832750#international

US site :wink: :lol:

fizzwheel
17-07-06, 06:43 PM
Get yourself a Halfords digital guage for about a tenner accurate to +/- 0.5psi :thumbsup:

I've got one of these, Good little guage. Its the only one I trust. Footpump and garage guages are not IMHO to be trusted one little bit.

Sid Squid
17-07-06, 06:47 PM
I wouldn't buy a digital gauge, the display may be accurate to what the gauge mechanism says, but is the gauge mechanism accurate?
Digital gauges are mostly baubles, buy a pen type gauge, preferably from a manufacturer like PCL, very cheap very good.
Every so often, like when you buy a tyre, test your gauge against that of the tyre fitters, in the UK Weights And Measures tests their gauges. If it doesn't measure up get a new one, or at least you'll be able to add/subtract a correction figure to your readings.

embee
18-07-06, 01:50 PM
I wouldn't buy a digital gauge, the display may be accurate to what the gauge mechanism says, but is the gauge mechanism accurate?........

I think this was a reasonable assessment a few years ago, but from what I can make out the modern generation are a lot better (like most of these things).

I've seen reviews of various digi vs analogue gauges in motoring rags, tested against calibrated equipment, and accuracy doesn't seem to be a big issue (at least when new). One survey did a test of dropping them several times onto concrete and checking again, with no problems.

I have a selection of pencil gauges, collected over the years :roll: , ranging from unbranded to Dunlop. They all read differently, only a couple of psi admittedly. I also have a cheapo 12V compressor with a gauge fitted which is remarkably accurate, though since it reads to 200psi it's working right at the bottom of the range and is only marked in 5psi steps, so you have to interpolate.

A friend recently bought an Oxford digi gauge and checked it at a tyre-dealer friend of his. It was pretty close, only the odd psi out here and there.

chazzyb
18-07-06, 06:58 PM
The Oxford Digi-Gauge also has a head you can swivel and is at 90 degrees to the body, so you can get it in and use it easily. It reads in 0.1 psi increments, so you can get really anal checking and adjusting your pressures. :oops: