Bulge in Tyre
Submitted: Friday, May 04, 2007 at 14:12
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wdric
While on a trip during
Easter Via the
rig road in the Simpson & Anne Beadel Hwy I had the miss fortune to use my spare tyre.
This tyre has been on the back door of my NM pajero since new (5/2002) and never used before.
I drove for approx 400ks on tare & 100ks on dirt, when this brand new tyre developed a bulge and vibration in vehicle.
I had been driving at about the speed in NT :), then while doing 120kph for 20 min the vehicle developed a vibration slowed down for a bit & it came back, stopped to
check, found tyre bulging on one side of the tread, with the lump being about the size of a hand and about 10mm high with no tread left on this.
Has anyone else come across this and have any ideas as to why?
It has been suggested that the sun may have caused this!
The vehicle is always in a carport when not in use and a vinyl tyre cover has always been fitted.
ric
Reply By: RupertDog - Friday, May 04, 2007 at 15:15
Friday, May 04, 2007 at 15:15
wdric
Had a similar prob with my old RAV. Punctured one of the normal tyres, put on the spare (brand spanking new, but 2 - 3 years old ie. had never been on the road). All ok for about a week, then all hell broke loose when the tyre blew and separated. Luckily rear tyre, separated at top of a steep
hill, so going reasonably slow (about 40ish), and was able to pull over and retrieve the shreds.
Vehicle also kept in a carport, with tyre under vinyl cover. I am no expert, but I think it is more than just bad luck. I now include the spare in all wheel rotations.
I think it must have somehting to do with being exposed to the weather, WITHOUT any weight or rolling somehow damages the tyre, so that when weight is added (ie put on the 4by) it stresses the tyre, and tyre fails.
RD
AnswerID:
237883
Follow Up By: Member - stefan P (NSW) - Friday, May 04, 2007 at 21:27
Friday, May 04, 2007 at 21:27
I had my spare blow out while bolted to the back door!!! Was sitting inside the house and heard a massive bang. The tyre blew a 10cm split in the side wall, luckily the tyre cover contained it and it didn't smash the rear window!
Cheers Stefan
FollowupID:
499071
Reply By: x4by4 - Friday, May 04, 2007 at 15:33
Friday, May 04, 2007 at 15:33
I would think it is due to the age of the tyre. Tyres give off chemicals with time, this is why they must have good ventilation in tyre warehouses.
I would expect a tyre in the sun would age quicker but even if kept undercover they will still age.
I have had bubble under the tread and it feels like it is out of balance when driving, but it is out of round due to separation and airunder the tread.
4 to 5 years is the safe limit of the modern tyre.
Pete
AnswerID:
237885