Done a Tyre on Sharp Rock
Submitted: Tuesday, May 13, 2008 at 12:59
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Bega Photographer
G'day
I did a tyre on my recent outback trip, presumably on a sharp
rock, on the station road near
Lake Torrens.
Straight through the centre of the tread.
I thought I was doing the right thing by putting plenty of pressure in the back tyres where the load was, for the stony country.
But the fella at the tyre service says that people over inflate their tyres and because there is no give, the sharp rocks go straight through. Has the ring of truth to it.
What's the word from ExplorOz?
Note: It was a brand new tyre; done about two and a half thousand kms.
Thanks,
Laurie.
Reply By: Member - John (Vic) - Tuesday, May 13, 2008 at 13:29
Tuesday, May 13, 2008 at 13:29
Tyre pressures have been done to death on here.
What the tyre bloke told you is correct, let the ba$tards down when off the black top.
Wasn't a Cooper by any chance??? :-)
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Follow Up By: JohnF56 - Tuesday, May 13, 2008 at 16:13
Tuesday, May 13, 2008 at 16:13
Cooper? Why ask?
Are they any different to other brands?
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Follow Up By: Member - Olcoolone (S.A) - Tuesday, May 13, 2008 at 16:48
Tuesday, May 13, 2008 at 16:48
Was the white lettering on the tyre facing inwards or outwards?
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Follow Up By: Member - John (Vic) - Tuesday, May 13, 2008 at 16:53
Tuesday, May 13, 2008 at 16:53
Cooper? Why ask?............Do an archive search and see why
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Follow Up By: equinox - Tuesday, May 13, 2008 at 22:32
Tuesday, May 13, 2008 at 22:32
Nothing wrong with Coopers, just drivers....
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Reply By: Member - Roachie (SA) - Tuesday, May 13, 2008 at 13:31
Tuesday, May 13, 2008 at 13:31
Oh dear oh dear.....another victim of the "over-inflate to counter the over-weight" syndrome.
When you're travelling on these sorts of tracks, you need to do 2 things.......
(1) REDUCE the tyre pressures so that the tyres will "mould" around the stones etc as you travel along......
(2) REDUCE your speed to match the pressure in your tyres. You cannot travel at 80 or 100k/h on tyres that you have reduced down to 24psi.....you MUST slow down or the heat build up in the tyres' sidewalls will see you having a blow-out. If you're not sure what's happening with your tyres, you need to stop frequently and measure the pressure and temperature.
Tyre monitors are worth the price. They cost about the same as one new tyre, so you've only gotta save one and you've recouped your outlay.
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Follow Up By: Member - Bucky (VIC) - Wednesday, May 14, 2008 at 06:55
Wednesday, May 14, 2008 at 06:55
Good call Roachie !
We run 25 psi, as a base pressure on outback roads,, depending on load,, and keep the speed down a little..
Every time we pull up, for a cupa or a foto, feel the tyres and brakes for heat,, we monitor manually
15 in sand,
32-34 on the black stuff,
Cheers MAte
Bucky
FollowupID:
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Reply By: Visitor - Tuesday, May 13, 2008 at 13:43
Tuesday, May 13, 2008 at 13:43
Just think of your tyre as a party balloon... Same theory...
Half inflated balloon and press a match into it and it will flex,,, do the same trick with a fully inflated balloon and "POP".....
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Reply By: Bega Photographer - Tuesday, May 13, 2008 at 13:48
Tuesday, May 13, 2008 at 13:48
Thanks fellas.
I'm sure tyre pressures would have been done to death on here.
Read a post the other week where someone recommended plenty of pressure so as not to rip out the sidewalls on the rocks. Looking for authoritative info. Looks like I've got it now.
No, it wasn't a Cooper. Just a tyre.
Not overloaded. Just loaded. About half a tonne on a one tonne ute, loaded well to the front as far as possible.
Twenty four psi and not too fast, huh?
Thanks,
Laurie.
AnswerID:
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Reply By: Sand Man (SA) - Tuesday, May 13, 2008 at 14:07
Tuesday, May 13, 2008 at 14:07
I'm not so sure about this theory.
I agree that tyres should be deflated when off the black top and perform this act "religiously".
But, when a sharp
rock slices into your tyre, I don't think tyre pressure has much of an impact, at least it didn't in my case.
Perhaps we should say, "lowering tyre pressure on dirt/gravel roads may lessen the chance of rocks causing damage".
Bill.
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Follow Up By: Bega Photographer - Tuesday, May 13, 2008 at 14:18
Tuesday, May 13, 2008 at 14:18
Well, that'll do me Sand Man. "Lessen the chance" sounds better than "likely to
puncture a tyre."
Thanks,
Laurie.
FollowupID:
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Reply By: Member - Davoe (Yalgoo) - Tuesday, May 13, 2008 at 14:52
Tuesday, May 13, 2008 at 14:52
were they 15 inch tyres?
sounds like you got an impact blowout rathe than a penatration. the soft construction and lack of plys and low load rating make many 15s suseptable
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Reply By: stevie1947 - Tuesday, May 13, 2008 at 17:16
Tuesday, May 13, 2008 at 17:16
I don't know why some of u fellas' run down Cooper tyres over and over again. It seems to be the same people all the time.
I think u must have a hidden agenda, perhaps u need reassurance that your tyres are better. I know there are a lot of negativity on this
forum, but u should not believe everything u read. Its the same with Togo versus Nissan.
As far as I'm concerned I have never had any problems at all with my Cooper ST's (2nd set) and I tow a caravan and do a fair amount of off road touring. My first set gave me trouble free 95,000 km, not even a flat.
Coopers will do me everytime.
ok I will sit back and watch the fight !!!!
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Follow Up By: Member - Tony N (WA) - Tuesday, May 13, 2008 at 18:06
Tuesday, May 13, 2008 at 18:06
OK ,but did u have the white lettering facing in or out
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Follow Up By: SoloGirl - Tuesday, May 13, 2008 at 20:02
Tuesday, May 13, 2008 at 20:02
This is like reading a mystery novel! What's with the lettering; I can't stand the suspense!!
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Follow Up By: Bega Photographer - Tuesday, May 13, 2008 at 22:46
Tuesday, May 13, 2008 at 22:46
Well, SoloGirl, it's a bit like if you're wearing a Rip Curl T shirt and everybody else is wearing a Quicksilver one. You turn your's inside out.
That broken the suspense for you?
Regards,
Laurie.
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Reply By: Bega Photographer - Tuesday, May 13, 2008 at 18:31
Tuesday, May 13, 2008 at 18:31
Nah, Fellas. Just a tyre.
Bridgestone Dueler A/T 225/75R15C. So I guess that makes it a 15 inch. I understand they're light truck tyres but can't see where it says so.
My previous trips have been in the Commodore wagon. Haven't done a tyre before. Thought I'd be safer with the heavier tyres so took only the one spare.
It's a 2wd Rodao ute. I drive it to the
homestead and then go on the bike with a small trailer.
Here we are, stuck in the sand on the
Andamooka Track. This is where I started loading the bike on the ute instead of the trailer. Let the tyres down to get out.
I do have
a few camping, photo stories on the web. More coming. Have a look if you wish.
Actually, this is a good time to ask for some
feedback on the stories. Are they worth telling to the outdoor adventure type people?
Thanks,
Laurie.
AnswerID:
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Follow Up By: Member - Duncan W (WA) - Tuesday, May 13, 2008 at 20:01
Tuesday, May 13, 2008 at 20:01
Photos good as usual Laurie and the story was equally as good. Get a bit of rain through the roof in the night did you?
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Follow Up By: Bega Photographer - Tuesday, May 13, 2008 at 22:26
Tuesday, May 13, 2008 at 22:26
It was just a short, sharp shower in the night, the noise of which woke me.
The photo looking out through the roof shows the
Southern Cross above the door. I took the photo with the small tripod on my box, sort of between the bed and the stove. So this is more or less the same as I saw when snuggled up for the night.
The foot of the bed would be facing the west and the side of the bed against the wall, where I tied the bed to prevent a catastrophe, would be facing north, so I was pretty well protected.
The outstanding thing about that particular hut was the warm and welcoming feeling I got from it. The warm glow of the Metters
Adelaide stove and the warm luminance on the wall, contrasting with the cold black of the night sky which enshrouded the stars, typifies the inner glow imparted to this lone, outback traveler,
miles and
miles from civilization.
Regards,
Laurie.
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Follow Up By: Member - Davoe (Yalgoo) - Wednesday, May 14, 2008 at 02:01
Wednesday, May 14, 2008 at 02:01
Yup i picked it in one
15s have a low loaqd index and wont cope with high pressures with the light construction and impacts will blow them out (they are only rated to 55 psi)
(I did 3 )
16s are far more robust
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Follow Up By: Bega Photographer - Wednesday, May 14, 2008 at 06:27
Wednesday, May 14, 2008 at 06:27
Oh, I didn't have them over inflated that far. Only 44 psi. Still, that's a good bit more than the 24psi recommended by Rochie.
Thanks,
Laurie.
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