A dangerous freebie...

When I bought my Caberg V2 at the NEC I got a couple of free gifts.
One of them a digital Motrax tyre pressure gauge. Anyway today I check the pressures and I get 19 and 25 PSI. Checking with my trusty pen gauge I get 32 and 36 PSI. Stupid digital thing is so far out as to make it quite bloody dangerous!
You cannot put your faith in any digital measuring device that doesn't come with a calibration certificate.

The same is absolutely true of any analog device. Digital isn't by definition any less or more trustworthy.

I would get a third opinion at a garage air pump, taking the others with me

Well a squeeze to the tyre with index finger and thumb have always served me well. As a back up a gentle kick with the right boot is a must also. This method though also does not come with a calibration certificate!

I have 2 digital ones and they are accurate to each other. To be honest
though you will never know how accurate without getting one of them
repeatedly calibrated. The worst offenders are the garage units though,
they have been upto 8 PSI out ....

Warned a couple of riders off the local Tesco one as it's soo far out it's not
funny

[Viney]

Originally Posted by minky

Warned a couple of riders off the local Tesco one as it's soo far out it's not
funny

Yeah, these out of town shops are a pain, i wish they would bring back more local shops!

Originally Posted by Viney

Yeah, these out of town shops are a pain, i wish they would bring back more local shops!

*SLAP*

Originally Posted by minky

I have 2 digital ones and they are accurate to each other. To be honest
though you will never know how accurate without getting one of them
repeatedly calibrated. The worst offenders are the garage units though,
they have been upto 8 PSI out ....

Warned a couple of riders off the local Tesco one as it's soo far out it's not
funny

Yep, told my old man off for using a garage one at the weekend.

"Dad, use my gauge in the garage, it's much more accurate. That one at the garage was out by 6 PSI last time I used it."

The response:

"It's fine. It's near enough. I've been driving 40 years, don't teach your grandmother to suck eggs, etc."

They won't be told, will they?

Originally Posted by Peter Henry

Well a squeeze to the tyre with index finger and thumb have always served me well. As a back up a gentle kick with the right boot is a must also. This method though also does not come with a calibration certificate!

i have a pair of nike that came with a tyre kicking calibration certificate..


tis true

Originally Posted by minky

I have 2 digital ones and they are accurate to each other. To be honest
though you will never know how accurate without getting one of them
repeatedly calibrated. The worst offenders are the garage units though,
they have been upto 8 PSI out ....

Warned a couple of riders off the local Tesco one as it's soo far out it's not
funny

One of those things was broken and i tried to pump up my car tires, the gauge said it was going nothing was happening but looking at the tire it was going down - alot. I told the girl behind the desk and she replied " i know" - cheers for that