Ryannn
Posted a lot
Posts: 2,421
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Feb 21, 2016 22:46:23 GMT
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I'm not talking dragsters or track cars here, just commuting!
I was putting some air into a flat looking tyre on a car I've just bought, first journey in it. I thought I'd check the others whilst I was at it.
Haynes states 30psi all round but an owners forum recommends 28 in the front and 26 in the back, I went with the forum recommendation as the car (metro) did feel a bit oversteery in the bends, anyway, I was shocked!
The flat tyre on the rear had 8psi, the other rear, 64!!! That will explain the handling then!
Both fronts had about 50psi in, the steering had felt stupidly light so I've dropped the air out of them aswell.
Already the car feels much better in the bends and it even feels like it accelerates quicker now?!
Other than human error, can anyone think why they'd be so much higher than the factory specs at all? And could it really have improved acceleration?
Cheers
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Last Edit: Feb 21, 2016 22:47:37 GMT by Ryannn
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sb
Part of things
Posts: 725 
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Feb 21, 2016 22:51:01 GMT
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They might have gone off the max PSI written on the tyre?
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Last Edit: Feb 21, 2016 22:51:12 GMT by sb
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Feb 21, 2016 23:11:30 GMT
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Filled from a forecourt airline that had been run over once too many times? Bought from someone who needed power steering hence the high front pressures?
Or they all go down so bunged in as much as possible so they stay up till you got it home?
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Feb 21, 2016 23:25:49 GMT
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I run 36psi all round in my wife's Ford BG Laser (Mazda 323 clone) and my Wolseley 1300, and 40 front / 45 rear in my Ford EA Falcon wagon.
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Ryannn
Posted a lot
Posts: 2,421
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Feb 21, 2016 23:32:59 GMT
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Or they all go down so bunged in as much as possible so they stay up till you got it home? The thing with that is, I bought it from a good friend who'd had it stood for a month and I've had it stood in my own garage for 2 months until today! Lol I'm swaying towards the elderly owner clause... |
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Feb 22, 2016 10:37:04 GMT
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maybe they put BAR in instead of PSI? 3.6 BAR would be 52PSI which would point at the human error/ not knowing how to read the scale right.
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Too many projects, not enough time.
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Feb 22, 2016 19:08:39 GMT
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Well, at least the fuel economy would have improved if they had all been at 56psi:-)
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Feb 22, 2016 21:59:02 GMT
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I've got my fairway at 54 psi. Seems to steer nice and light
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Feb 22, 2016 23:19:49 GMT
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I've seen them way over a few times when new tyres have been fitted at fast fit places.
I reckon most people never check pressures,if its got air in they are happy !
When i picked up my Eunos it was very skittish and a bit unnerving in bends,checked the pressures and it had nearly 40 psi all round.I reduced it to 28 and it was a different car.
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They might have gone off the max PSI written on the tyre? I was surprised how many people think that's the pressure to run them at. Who knows how many unsafe cars there are on the road because they're running with 50 or 60 psi in the tyres. I even caught my own local tyrefitter doing that - and he'd been doing it for years. When I'd got tyres from him previously, they were always far too hard but I'd assumed he'd simply left them at a blow-up pressure and had just overlooked setting them properly. No big deal at the time; it was only later in conversation I learned that he thought the max pressure on the sidewall was the running pressure. |
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That is disgraceful for a supposedly professional operator. Hundreds, if not thousands, of his customers will be driving around dodgy after following his advice.
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I normally do this with cars I'm having to push around the unit a lot by myself, takes a bit of strain off my poor legs. Wouldn't dream of driving them around at those sort of pressures tho
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Feb 25, 2016 10:49:54 GMT
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That is disgraceful for a supposedly professional operator. Hundreds, if not thousands, of his customers will be driving around dodgy after following his advice. There's a difference between a professional and someone who does it for a living. |
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paul99
Part of things
Posts: 410
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Heavy load/ High speed pressures? Still seem on the high side even so......
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Ryannn
Posted a lot
Posts: 2,421
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Heavy load/ High speed pressures? Still seem on the high side even so...... It's just a metro! Lol Sadly it isn't as economical now I've let the air out, but it rides and grips much better! |
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