Author Topic: Tyre pressure gauges.  (Read 229 times)

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Offline Barbel Mick

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Tyre pressure gauges.
« on: September 13, 2021, 21:58:30 »
When I had my new tyres fitted today the fitter said the reason for the (quick) wear on my old ones could have been because I was running them on too low a pressure.
When he fitted my new ones he put 36psi in the front & 42psi in the rear (that is 3psi higher than indicated on the chain guard for the front & 1psi down for the rear with a pillion!) I could only find, on a Bridgestone site, that the maximum for either tyre should be 42psi.
When I got home I left the bike for an hour or so to let the tyres c.o.o.l and measured the pressures with my (old pencil type) gauge, they read 31psi front & 38psi rear so not sure who's gauge is more accurate, I am thinking the tyre fitters as mine is probably 30 years old!!  :roll: But if that's the case, if mine reads low, I've been over inflating?
 
Questions,
1. What do you recommend as the most accurate tyre pressure gauge? (I do need a new one & don't mind paying, a sensible price, for a good, accurate as possible one.)
2. Are petrol station pressure gauges calibrated? (I read that if you pay for the air you should 'expect' that the reading should be accurate)
3. What pressures do those of you with Bridgestone A41's fitted run them at? (I am two up most of the time)

Thanks
Mick

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Re: Tyre pressure gauges.
« Reply #1 on: September 13, 2021, 22:13:39 »
No idea of its accuracy but I use an Oxford dial type with a bleed button on the side. I've had digital ones go crazy with readings when the battery starts running out.

Offline Pannier Down

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Re: Tyre pressure gauges.
« Reply #2 on: September 13, 2021, 22:28:19 »
+1 for a dial type with a  bleed valve. I used this type when I raced (cars, sorry). To be fair my local BP garage's digital air line gives pretty much the same reading as my own gauge.

Offline Treadtrader

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Re: Tyre pressure gauges.
« Reply #3 on: September 14, 2021, 08:17:42 »
Never trust forecourt gauges, just watch how people abuse them.
A good pencil gauge should be accurate, go for a good quality brand.
I use digital inflators in my tyre business, checked on a master gauge regularly, then calibrated by specialists every few months.
My master gauge is a dial type, always correct when checked for calibration.
There is so much cheap crap about, pay for the best for peace of mind.

Offline kwackboy

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Re: Tyre pressure gauges.
« Reply #4 on: September 14, 2021, 08:50:17 »
Mick .

Your tyre fitter is correct, even slightly low pressures can cause premature wear and 36/42 psi is about right for bridgestones.

I use a Sealy gauge , it measures tyre tread depth also.

Even though I have a gauge, I'm sometimes guilty of giving the tyres a squeeze and thinking "that'll do"  :whistle:
Chief trouble maker 🙂

Offline clutchspring

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Re: Tyre pressure gauges.
« Reply #5 on: September 14, 2021, 09:28:08 »
Some time ago one of the motorcycle  magazines did a article testing a load of different tyre gauges & the pencil type one came out on top for accuracy  & price.
I always  carry one on my bike, one other thing that baffles me is why people pay to blow & check their tyres at the local filling station !, .
1 the gauge is likely to be in accurate
2 why not buy a foot pump
3 when traveling to the filling station your tyre's are going to be warm so you'll not get a accurate reading .

Ian.

Offline mr_diver

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Re: Tyre pressure gauges.
« Reply #6 on: September 14, 2021, 09:38:00 »
I use the local Morrisons, which is about 300 yards though a 20mph zone where you're not likely to get above 12mph.
Tyres not going to get very warm on that journey.

I do love peeing people off when I get the tyre gauge out and double check the pressures.
The new machine there is accurate, the old one was out by 2-3 psi.
I wonder how long the new one will stay accurate.

I'm just being lazy... there is a 12v conpressor under the seat, but it takes too long to tuck the cable and hose back in and jam it in under the seat.

If I'm not stopping for fuel before a ride I'll check it before leaving my garage.



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Offline Barbel Mick

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Re: Tyre pressure gauges.
« Reply #7 on: September 14, 2021, 15:58:30 »
Thanks for the replies.
kwackboy, I eventually found found the Bridgestone recommended pressure on their site for the size of tyres & those figures are correct.  :thumb:
I do use a foot pump for the bike & the car, but I am now doubtful that my very old pressure gauge is any where near accurate.
When I buy a new one, or even two, (a dial type & the pencil type) I would like to find out how accurate they are by measuring them against an accurate/calibrated one, then I can adjust as necessary.
Mick

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Re: Tyre pressure gauges.
« Reply #8 on: September 14, 2021, 20:05:26 »
Invest in something decent, rather than the cheap Chinese ones as the poor internal machining makes a big difference. I got a PCL one that is always consistent after having cheap junk that came up with different answers every time.
Seems pearl asbo orange is faster after all....

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Offline InvictaMoto

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Re: Tyre pressure gauges.
« Reply #9 on: September 16, 2021, 11:12:16 »
I won one of these in a local bike club raffle. It seems to work and the tyre-fitter bloke reckoned it was pretty accurate when I had the Rocket's tyre plugged.  I carry it in the top box now just in case.....

https://jsaccessories.co.uk/product/motogp-tyre-pressure-monitor-with-lcd-39532?variant=113369