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| Thread ID: 145468 | 2017-11-10 20:25:00 | Tyre Pressure | bk T (215) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1441777 | 2017-11-10 20:25:00 | Is the pressure gauge at the petrol station accurate? I have a pen-size pressure gauge at home and differences between the is about 2 ~ 3 psi. |
bk T (215) | ||
| 1441778 | 2017-11-10 21:43:00 | Is the pressure gauge at the petrol station accurate? I have a pen-size pressure gauge at home and differences between the is about 2 ~ 3 psi. There is no way of knowing without a calibration check against a certified gauge. In the good old days at the Physics and Engineering Lab we had various low level standards set up for people to come and check their own instruments, gauges, micrometers etc free of charge. It wouldn't be worth paying for a calibration certificate for a tyre gauge. Edit: you could always ask at the garage whether they have the pressure gauge periodically checked by a suitable authority :banana |
Terry Porritt (14) | ||
| 1441779 | 2017-11-10 21:55:00 | Some years back the man from Weights and Measures would come around to all the businesses and check things like the tyre pressure gauge. I'm certain they would still do that today so I would say that the service station gauge would be more accurate than your gauge. | Roscoe (6288) | ||
| 1441780 | 2017-11-11 01:01:00 | Thanks guys. | bk T (215) | ||
| 1441781 | 2017-11-11 02:31:00 | afaik a lot of the gas station air pumps are small cheap crappy pumps. i suspect the air coming out is rather hot which gives higher pressure reading. once its cooled down it will give lower pressure reading. i would keep a gauge in the car. even if its not the most accurate. if you only use that gauge then it really doesn't matter. if you have to pump up a tire at the gas station, then over fill it. wait until its cooled then use your gauge to adjust pressure. the other way is to just get your own 12v pump and pump your tires up when ever required. real handy if you get a slow leak while out and about. |
tweak'e (69) | ||
| 1441782 | 2017-11-11 06:45:00 | The tyre pressure gauge at the garage is absolutely accurate. All the other service stations may have a lesser standard of accuracy. The Europa stations are the best, but Big Tree stations are not as bad as the ones that are worse. BP have almost half their gauges worse than average. They should be accurate, up to 2% of the fees for free air service go toward calibration each century whether they need it or not.;) |
R2x1 (4628) | ||
| 1441783 | 2017-11-11 07:55:00 | What do you guys think about this little one? Better than those at the petrol stations? Here it is: 8404 Can't remember how and when I got it but for sure it's about 30~40 years ago. |
bk T (215) | ||
| 1441784 | 2017-11-11 08:07:00 | What do you guys think about this little one? Better than those at the petrol stations? .............................. For sure, you can't carry a petrol station pressure gauge in your pocket :clap |
Terry Porritt (14) | ||
| 1441785 | 2017-11-11 18:38:00 | What do you guys think about this little one? Better than those at the petrol stations? Here it is: 8404 Can't remember how and when I got it but for sure it's about 30~40 years ago. Just check your tyre pressure at 2 or 3 service stations and then check again each time with your gauge and see if the readings agree. I would be surprised if there is much difference. It is perhaps more important that your tyres are all inflated evenly than exactly to the manufactures specfications. So long as your tyres are wearing evenly ie, not more in the centre of the tread or at the edges it is safe to assume that your gauge is accurate. |
CliveM (6007) | ||
| 1441786 | 2017-11-12 00:55:00 | than exactly to the manufactures specfications. manufactures specs don't mean anything unless its still on the original factory tires. this whole thing of "check your air pressure to the manufactures spec" because most of us don't run factory tires. different tires require different pressures. you need to work out whats suitable for your tires and if your using your gauge, then the numbers don't mean much. if you use your gauge accuracy no longer is an issue. |
tweak'e (69) | ||
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