OK, so where does it go???

Submitted: Sunday, Apr 09, 2006 at 20:22
ThreadID: 32717 Views:1878 Replies:8 FollowUps:12
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Evening peoples,

Took the #2 vehicle out for a drive this afternoon, had sat in the shed for a couple of weeks.

Checked tyre pressures and suprise/suprise had only about 20+psi in each tyre.

Where does the extra PSI go???

Yep I know, someone will explain it in great detail, but......Put the car away with 30+ pressure in the tyres,,,,,,,no leaks, has dust seal, tubeless tyres, Michelins, no obvious leaks,,,,,,,so over a week or two a few inches of pressure disapears.

Where does it go??

I have just lost in excess of 40psi and I want to know who has it,,can anyone help??

Regards

Michael B (SA)

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Reply By: Footloose - Sunday, Apr 09, 2006 at 20:31

Sunday, Apr 09, 2006 at 20:31
Like anything good, it went to the Tax Dpt :))
AnswerID: 166023

Follow Up By: Michael B - Sunday, Apr 09, 2006 at 20:33

Sunday, Apr 09, 2006 at 20:33
I've just had my tax 'done' Footy, and I reckon you could be right........LOL

Michael
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Follow Up By: Trevor R (QLD) - Sunday, Apr 09, 2006 at 21:01

Sunday, Apr 09, 2006 at 21:01
ROFLMAO
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Reply By: Peter 2 - Sunday, Apr 09, 2006 at 20:32

Sunday, Apr 09, 2006 at 20:32
Wouldn't happen to be an 80 series with the factory steel wheels would it?
They commonly get circumfrential (sp) cracks in them which causes this sort of theing to occur.
If so you need to get new wheels, not safe to weld them or fit tubes as the rims will eventually let go.
Peter
1996 Oka Motorhome

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AnswerID: 166025

Follow Up By: Michael B - Sunday, Apr 09, 2006 at 20:36

Sunday, Apr 09, 2006 at 20:36
Nah Peter, it is a 3.2 XJ8 with factory alloys,,,would hope that there are no real probs with the wheels.......could have some serious worries if there are..

Michael
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Follow Up By: Bob Y. - Qld - Sunday, Apr 09, 2006 at 20:44

Sunday, Apr 09, 2006 at 20:44
Peter,

Our 80 had been losing some air in one wheel for a while. Took it to tyre place in Winton, just as you've said, hole/split in the rim. Got a tube in now, sounds like a set of mags might be the go.

Thanks for that confirmation,

Hooroo...

Seen it all, Done it all.
Can't remember most of it.

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Follow Up By: Peter 2 - Sunday, Apr 09, 2006 at 21:44

Sunday, Apr 09, 2006 at 21:44
Don't leave it too long, the wheel shoudn't be used as it could fail/split at any time.
check the others too as they quite often don't leak until the crack is relatively big/long.
Fitting a tube is not a good idea as if the rim comes apart you may have a big accident.
Peter
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Reply By: Member - Bware (Tweed Valley) - Sunday, Apr 09, 2006 at 20:34

Sunday, Apr 09, 2006 at 20:34
It's a mystery, ain't it? Our '93 80 series doesn't lose any air but the wife's new Kia Rio seems to have lost a few psi evey time I check it!
AnswerID: 166027

Follow Up By: Michael B - Sunday, Apr 09, 2006 at 20:39

Sunday, Apr 09, 2006 at 20:39
Bware,

Wonder who has all these 'stolen' psi.

Must be a good market one would think..

Michael
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Follow Up By: Member - Bware (Tweed Valley) - Sunday, Apr 09, 2006 at 21:19

Sunday, Apr 09, 2006 at 21:19
Maybe the Airy Fairies?
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Reply By: howesy - Sunday, Apr 09, 2006 at 20:41

Sunday, Apr 09, 2006 at 20:41
Always thought there were a lot of oxygen thieves out there.

Did you put it away after checking pressures hot.
AnswerID: 166031

Follow Up By: Michael B - Sunday, Apr 09, 2006 at 20:46

Sunday, Apr 09, 2006 at 20:46
Nup Howesy,

Normal,

Last run all OK, nothing out of the ordinary. Checked all before trip, OK, did about 200 - 300km, pop it back in garage.

Two week or so later and some lowlife has stolen 40 odd psi..life sucks!!!

Michael
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Follow Up By: Member - Bware (Tweed Valley) - Sunday, Apr 09, 2006 at 21:21

Sunday, Apr 09, 2006 at 21:21
There is a saying: 'There is no gravity, the earth sucks'
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Reply By: Peter 2 - Sunday, Apr 09, 2006 at 20:50

Sunday, Apr 09, 2006 at 20:50
Be aware that alloys can and do lose air due to porosity, shouldn't be a problem these days but was a big problem in the past. We had a Rangie with alloys that had the problem and the tyres had to be taken off, the rims 'painted' and the tyres refitted before they would hold air.
Occasionally you can get porous tyres too, usually fixed by coating the inside of the tyre with a special sealer.
not likely to happen on the Jag but grit and dirt in the bead can also cause slow leaks on tyres, i've had it happen on the camper especially after a bit of off road work involving mud and dirt.
If you suspect the rims get a tyre place to loosen them, tyre soap the bead and refit as a first step as this is the most likely spot, if it still happens get the tyre place to inflate to max pressure and immerse in the test tank, watch for bubbles.
Peter
1996 Oka Motorhome

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AnswerID: 166034

Follow Up By: Michael B - Monday, Apr 10, 2006 at 08:41

Monday, Apr 10, 2006 at 08:41
Thanks Peter,

On a serious note, have had new tyres fitted not too long ago, car is due for a service shortly so will have them take wheels off and check just to be 100% comfortable.

Regards
Michael
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Reply By: Footloose - Sunday, Apr 09, 2006 at 20:57

Sunday, Apr 09, 2006 at 20:57
From the Cooper Pedy News
"Air pressure should always be checked when the tyres are cold before temperature can affect them. Tyres can lose up to 1 PSI per month due to air escaping through the rubber as it stretches.”

Hmm....
AnswerID: 166036

Reply By: Willem - Sunday, Apr 09, 2006 at 21:00

Sunday, Apr 09, 2006 at 21:00
PSI thieving seems to be on the increase.

No wonder at the recent State election a promise of 800 more police officers to exert law and order was popular.

Maybe they will form a special police branch to combat PSI thieves.

Our taxpayer dollars are at work!!!!!
AnswerID: 166039

Follow Up By: Member - Bware (Tweed Valley) - Sunday, Apr 09, 2006 at 21:26

Sunday, Apr 09, 2006 at 21:26
CSI-PSI!
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FollowupID: 420972

Follow Up By: Michael B - Monday, Apr 10, 2006 at 08:35

Monday, Apr 10, 2006 at 08:35
You could be right Willem,

Best be extra careful getting ready for your next trip, small country towns like ours could be the target of professional PSI pinchers.........lol

Regards
Michael
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Reply By: greydemon - Monday, Apr 10, 2006 at 10:33

Monday, Apr 10, 2006 at 10:33
I used to have this problem but I now regularly take my vehicle into the tyre specialist and get the air in the tyres rotated. Works a treat.

My theory is that by giving the air regular rests in the spare tyre it doesn't feel overworked and is thus less incclined to leave home.
AnswerID: 166123

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