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Not bikes but general tyre maintenance

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Polarbear
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PostPosted: 14:09 - 03 Oct 2019    Post subject: Not bikes but general tyre maintenance Reply with quote

I presume that most of us on bikes are pretty tyre conscious as far as maintenance and condition goes, I certainly am.

So I was rather stunned when I came across this........

https://news.images.itv.com/image/file/1995801/stream_img.jpg

Car with bizarre bubbles on front tyre stopped on school run in Derby

It is utterly frightening that this level of stupidity/incompetence exists in humans. Imagine that blowing out on a crowded street or motorway.

https://www.itv.com/news/2019-10-02/car-with-bizarre-bubbles-on-front-tyre-stopped-on-school-run-in-derby/?fbclid=IwAR0bXIbz-fOUpE65vkVEAyd6xWhnFnvma6L0_M2rcFNcC7F7IVn-KpknOMQ
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Easy-X
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PostPosted: 14:19 - 03 Oct 2019    Post subject: Reply with quote

Eeeeek Shocked

I remember finding a tyre bulge on one of my old Golfs; nearly shat myself when I spotted it: "how long has it been like this?!"

...and that bulge was probably ~1mm proud of the rest of the tyre wall!
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Bhud
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PostPosted: 14:43 - 03 Oct 2019    Post subject: Reply with quote

Attitudes about vehicle maintenance and consumables seem to be pretty bad, generally. Might have something to do with a general lack of enforcement. For most people, their car or commercial vehicle is just an appliance like a washing machine: a "fix or replace it when it breaks" mentality. Throwaway culture, with no sense of responsibility. To enforce this type of stuff requires unengaged, spare police officers to drive around looking for problems on the road. The days when that used to happen are gone for good, but they do the odd spot-check from time to time. Polished German bangers with tyres and brakes the owner can't afford to replace and number plates in dodgy fonts aside, school run types in battered, ill-maintained people carriers are also commonplace around these parts. It goes with a whole different mentality.

https://twitter.com/tvprp/status/1179396207543750659
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stinkwheel
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PostPosted: 16:03 - 03 Oct 2019    Post subject: Reply with quote

Those bulges are way too evenly spaced for it not to be some sort of failure of the carcasse.

I think that's a manufacturing issue.
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doggone
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PostPosted: 17:24 - 03 Oct 2019    Post subject: Reply with quote

While it's obviously unsafe, laying into the driver for 'not noticing' is a tad unfair since it probably did that in a matter of seconds - while driving - once air got between layers.
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MarJay
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PostPosted: 17:29 - 03 Oct 2019    Post subject: Reply with quote

stinkwheel wrote:
Those bulges are way too evenly spaced for it not to be some sort of failure of the carcasse.

I think that's a manufacturing issue.


The common consensus on a reasonably expert filled car forum I frequent is that she kerbed the car a number of times. Those bulges don't just appear at once, so it wasn't an instant failure.

I once saw a middle aged woman driving a Vauxhall Zafira where the front left tyre was no longer on the rim and was completely shredded, with sparks coming from the bare rim. On the motorway. In the middle lane. At about 60mph. With a completely oblivious expression on her face.
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RhynoCZ
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PostPosted: 18:46 - 03 Oct 2019    Post subject: Reply with quote

This is what happens when you drive with a flat tyre. The side wall just gets ruined.
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dynax
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PostPosted: 19:02 - 03 Oct 2019    Post subject: Reply with quote

Driving with tyres like that should be an instant disqualification Twisted Evil
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sickpup
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PostPosted: 19:59 - 05 Oct 2019    Post subject: Reply with quote

MarJay wrote:
The common consensus on a reasonably expert filled car forum I frequent is that she kerbed the car a number of times. Those bulges don't just appear at once, so it wasn't an instant failure.


That's precisely why you shouldn't believe what you read on a forum.
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Riejufixing
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PostPosted: 21:06 - 05 Oct 2019    Post subject: Reply with quote

I don't believe this. I don't believe the tyre could look like that without deflating very rapidly, and I don't believe the advice given: "After inspecting the front tyre, the officer advised the motorist to head to a nearby garage to have a new tyre fitted."
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hellkat
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PostPosted: 21:42 - 05 Oct 2019    Post subject: Reply with quote

How did it never before occur to me to wonder whether rozzers were allowed to have visible tattooes?
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Polarbear
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PostPosted: 21:43 - 05 Oct 2019    Post subject: Reply with quote

I'd be curious to pop one of those bulges and see what happens.

I'm presuming the whole tyre would deflate but would it be like a blow out or a slow deflate?
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Riejufixing
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PostPosted: 21:46 - 05 Oct 2019    Post subject: Reply with quote

hellkat wrote:
How did it never before occur to me to wonder whether rozzers were allowed to have visible tattooes?

He's no flattie he's a carncel jobswth.
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Polarbear
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PostPosted: 21:50 - 05 Oct 2019    Post subject: Reply with quote

Riejufixing wrote:
I don't believe this. I don't believe the tyre could look like that without deflating very rapidly, and I don't believe the advice given: "After inspecting the front tyre, the officer advised the motorist to head to a nearby garage to have a new tyre fitted."


They are Public Protection Officers, not coppers so I presume a fancy name for Derbys PSCO's.
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Sister Sledge
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PostPosted: 22:02 - 05 Oct 2019    Post subject: Reply with quote

The state of that tyre. It's one of the reasons I don't buy used tyres. You just don't know the history.
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sickpup
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PostPosted: 12:26 - 07 Oct 2019    Post subject: Reply with quote

Back in front of a computer so I can answer this fully.

MarJay wrote:
The common consensus on a reasonably expert filled car forum I frequent is that she kerbed the car a number of times. Those bulges don't just appear at once, so it wasn't an instant failure.


Its unlikely to be from banging against kerbs. The tyre is on the RHS, more likely for that to happen to a tyre on the LHS.
The damage is very regular which suggests its something to do with the construction of the tyre such as at the edges of radial plies.
As you say it hasn't all happened at once so if it was from kerbing an air bubble would have been without doubt ripped off.

The biggest thing that says it isn't a kerbing problem is the damage is to the rubber and not the carcass of the tyre. There is a delamination between the layers of the tyre which typically only happens when the tyre overheats so it is likely this tyre was run at low pressures for long periods which caused overheating and partial delamination.
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Old Thread Alert!

The last post was made 4 years, 173 days ago. Instead of replying here, would creating a new thread be more useful?
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