Seeking an accurate tire pressure gauge

No H2O

No H2O

Active Member
I used to only use the gauge that came with the air tool inflater and attached to a pancake air compressor.
Then I got the analog one on the right and it would show a higher PSI than the pancake compressor so thinking that it took a greater "force" of air to fight the friction on the rod that pops out of the pancake compressor gauge, I started going by the manual gauge.
Since I moved into an apartment and can no longer run a pancake compressor I got this portable slime compressor with built in gauge that runs off the car cigarette lighter port.
At first the gauges were all roughly reading the same.
Then the small slime digital gauge started to read 8-10 psi low.
Soon after the manual gauge started to read 8-10 psi low.
So at this point the gauge on the slime compressor reads higher than both the analog and small slime digital gauges.
If these were small differences like 1-2 lbs I wouldn't care but the slime compressor is reading 41psi while the other two gauges are showing 33psi for the back tire, that's almost 10 psi difference.

Is there an accurate gauge out there?

pressure gauges20191019_165221.jpg
 
pknowles

pknowles

RETIRED
Yes it is. Check summit racing and get yourself a middle of the road gauge and you should be fine. After you get a new accurate gauge, see which one you have that is close and throw the rest away.
 
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Mickeetwo

Mickeetwo

Guru
I have several tire gauges and they all read differently. Purchased a Accutire digital gauge and it seems to be correct. Checked it with a couple from the tire store and it was the same. It's also the same as my TPMS on my trucks (when cold)
 
No H2O

No H2O

Active Member
I assume as a tire pressure gauge ages it becomes inaccurate reading less psi than it should.
Is it possible that a tire pressure gauge would ever read more psi than there is? That would be a greater safety issue, in other words I could/should always just go by the highest reading gauge.
 
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W

woodbutcher

Mr. Old Fart member #145
Staff member
With as little volume as there is in both the front and back tires, the pressure seems like it would change from one checking to the next.
 
roadie1389

roadie1389

Well-Known Member
My digital slime used to be on point but lately its been off by about 3 - 4 PSI. I have a BikeMaster (rebranded something) one like you have witht he hose and it seems to be more accurate.
 
EZ Dog

EZ Dog

Active Member
Consumers report's tests gave Accutire digital the best rating. I have 5 different ones and they all measure the identical pressure for what it's worth. Keith


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