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View Full Version : SLS MASKS A FLAT TYRE!



LOVEMYRANGIE
6th August 2012, 05:07 PM
Coming back from Busselton here in WA on Saturday from a weeks free holiday courtesy of MIX 94.5's Winter Staycation competition, but that's another story ;)

Cruising up the Forrest Hwy / Kwinana Fwy on the last leg home, when all of a sudden the LH rear tyre let go totally at 110kmh!

After briefly heading across two lanes of traffic towards the inner guardrails without my consent, got Bonnie under control and pulled off the side onto emergency strip.
First thoughts were an axle had let go from the bang and the sudden veering off.
No indication of a flat as I'm suspecting being dead straight road and the fact that the SLS was compensating for the slowly deflating tyre an re levelling everything.
Anyway, following pics will tell the rest of the story.

https://www.aulro.com/afvb/images/imported/2012/08/1495.jpg

https://www.aulro.com/afvb/images/imported/2012/08/1496.jpg

https://www.aulro.com/afvb/images/imported/2012/08/1497.jpg

https://www.aulro.com/afvb/images/imported/2012/08/1498.jpg

https://www.aulro.com/afvb/images/imported/2012/08/1499.jpg




Using Capitals, the difference between helping your Uncle Jack off a horse or helping your uncle jack off a horse...

rover-56
6th August 2012, 05:37 PM
Yep, happened to me too, but without your drama.
SLS masks the lean and I think ACE hides the sway.
Not sure if its a good thing or not??
Terry

Pedro_The_Swift
6th August 2012, 05:58 PM
no trailer?

I would think by the loud bang there must have still been lots of air in there,,,

SiddersC
6th August 2012, 06:10 PM
A couple of tyre plugs should fix that!:D

On a serious note I always run my tyredog on my rear tyres when going away, if I am towing I put the front sensors on the trailer, it has saved at least a couple of tyres for me.

Bradtot
6th August 2012, 06:58 PM
Andrew You are so lucky you didnt roll. I had this happen to My rangie at xmas last year and almost rolled it. You have also done buggerall damage to the bodywork.
Glad all is well now go and buy a lottery ticket..:):):)
Brad

LandyAndy
6th August 2012, 07:02 PM
Lucky Andrew.buy a lotto ticket.
Could have ended up much worse.
Andrew

LOVEMYRANGIE
6th August 2012, 07:18 PM
Funny thing is tread shows no sign of running out, it's all on the sidewall...

Already got tickets!!


Using Capitals, the difference between helping your Uncle Jack off a horse or helping your uncle jack off a horse...

Banjo_pluker
6th August 2012, 08:29 PM
You also have a ready made swing for some lucky child

Alex 110
7th August 2012, 08:19 PM
This phenomenon is known as radial run flat.
What happens is that the centrifugal force on the steel belt of the tyre from the rotation of the wheel at speeds over about 80km/hr makes the tyre feel like its fully inflated even as it slowly loses pressure.
However the lack of air causes excess flex in the sidewall, heat build up, and eventually catastrophic failure of the tyre where the sidewalls meet the tread area - essentially the tyre all of a sudden goes BANG and separates into 3 pieces, which is what your pics show.
I first read about this in a 4WD mag in the mid 90's, and a few weeks later my Dad had this happen on his 1974 renault (fortunately a rear tyre, I wouldn't like to think about it happening on the front)
Cheers,
Alex

LOVEMYRANGIE
10th August 2012, 05:43 PM
Yep sounds about right, sidewalls were red hot to a point I had to wait to take it off as I couldnt keep my hands on it.
Also explains why the tread doesn't even look remotely damaged or scuffed.

The sidewalls on the Conti's are actually pretty flimsy to start with, think you can see how thin they are in the pics, only two canvas plies and no thicker than about 7or 8mm.


Using Capitals, the difference between helping your Uncle Jack off a horse or helping your uncle jack off a horse...