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Tyron multibands - an alternative to runflats?


Jouef
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Any experience, opinions or advice concerning Tyron multibands? They provide limited ‘runflat’ capability in a standard tyre which has deflated but not completely shredded. With our safety being sacrificed to the demise of the hard shoulder and the spare tyre, could they be a partial alternative to runflats? They seem a pretty universal fit, as the band fills the well needed to get the tyre beads round a wheel. This is to stop the tyre removing itself if the bead breaks on the road, keeping enough rubber between rim and tarmac to limp to safety. They impose an additional step for tyre shops - there is one on eBay apparently bent by an impatient fitter. Cost is not an issue to me, though may be to others. They have an informative website, and are discussed on caravan forums. Thanks.

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  • 1 month later...

What about a life of tyre product like Puncturesafe? Increases tyre life, near instant sealing of anything repairable puncture wise. Having played ‘stab the tyre’ at various automotive shows over the years and seen people doing major distance work in inhospitable conditions who swear by it, it’s worth consideration.

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On 7/8/2021 at 2:48 PM, Avalon said:

What about a life of tyre product like Puncturesafe? …

Interesting, many thanks for the suggestion. Claims to permanently seal small punctures and to control deflation of larger holes, in both tread and walls. This could give a similar limited runflat ability to the multibands, while additionally eliminating minor deflations. Also gets round the tyreshop problem: only non-repairable damage would need attention, so no need for careful removal - the tyre’s scrap anyway. I’ll look onto this product further. Have you used it yourself?

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TBH can't see those multibands being any use - You can't drive on a flat tyre for long, not above first-gear idle anyway.

When we were escorted to the laybay by a Highways 4x4 after having a deflation that caused the M25 to be closed, even driving super slow the tyres were smoking by the time we got to the layby and had shredded regular V cuts all around the sidewall.

 

As for PunctureSafe, it's really good stuff - Works exactly as advertised; When I was trying it, didn't get a single puncture and also never had to re-inflate my tyres, where usually I'd have to add a couple PSI ever month or so due to all the speed humps, cushions and pot holes I regularly contend with.

When the tyres were eventually changed a couple years later, IIRC one of them had something like 4 nails in it! Didn't even notice because they'd been sealed so well!

It's also water soluble so washes out very easily, and not that expensive to do per wheel.

 

The thing that stopped me using it tho' is it unbalances the tyre - At city speeds it's fine, but when I went at speed on the motorway, there were certain speeds that triggered a resonance that made the steering wheel shake quite alarmingly like a load of wheel-weights had been thrown. It would go away as soon as I backed off, but that sort of thing doesn't give confidence!

It might depend on the diameter of the wheel where the resonance is triggered, but with the 175/65R14's on the Yaris I was driving at the time, anything over 60 made the car shake increasingly badly.

It also had a noticeable damping effect on coasting, i.e. increased rolling resistance, and I did notice a small decrease in mpg - Nothing huge, but consistently a couple mpg down on average vs previous measurements.

So while it did work very well for what it was designed for, there are definitely tradeoffs. I think it'd be best used in short-range city EVs that have stupidly expensive tyres, but for motorway warriors with cheap tyres it's not so beneficial.

 

There are OEM alternatives - Continental have ContiSeal, which is a bit like PunctureSafe but with a fixed sealant layer, so no sloshing about to resonate. I also know Pirelli do one but forget what it's called. Only downside is they're only available in limited tyre sizes and are incomparably expensive compared to the normal tyre...! They seem to be aimed mainly at massive rims with stupidly low-profiles.

 

 

 

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10 hours ago, Jouef said:

Interesting, many thanks for the suggestion. Claims to permanently seal small punctures and to control deflation of larger holes, in both tread and walls. This could give a similar limited runflat ability to the multibands, while additionally eliminating minor deflations. Also gets round the tyreshop problem: only non-repairable damage would need attention, so no need for careful removal - the tyre’s scrap anyway. I’ll look onto this product further. Have you used it yourself?

Yes, for years on motorbikes for many years (they don’t come with a spare and I was generally in quite a rural area) and cars where no spare was provided (Roadsters generally). It’s also got a reasonable following in caravan and agricultural applications. The only issue is tyre fitters don’t like getting covered in it (its water soluble) and the suggestion is it could damage TPMS, I haven’t personally seen anyone actually have a TPMS failure attributed to this, and having played with some of this stuff, the viscosity is such that it seems quite unlikely. The one fly in the ointment is balancing a wheel needs to be done before it’s added.

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I can believe it fouling a TPMS - The guy putting it in for me was injecting it through the valve after removing the valve core, but he must have done something wrong on that one wheel, as the PunctureSafe set in the valve and we couldn't inflate the tyre! Had to limp it to a garage and get them to replace the whole valve - Luckily it was just a normal one - but the garage were not particularly receptive to the whole idea and we had to rinse out the PunctureSafe that had been injected ourselves before they'd even touch it any further.

In hindsight I wonder if dripping some water into the valve might have dissolved it and cleared the blockage, but we'll never know!

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On 7/9/2021 at 11:42 PM, Cyker said:

TBH can't see those multibands being any use - You can't drive on a flat tyre for long, not above first-gear idle anyway.

When we were escorted to the laybay by a Highways 4x4 after having a deflation that caused the M25 to be closed, even driving super slow the tyres were smoking by the time we got to the layby and had shredded regular V cuts all around the sidewall

The regular V-cut shredding suggests that your tyre bead may have dropped in and out of the fitting well in the wheel, and allowed the rim to run back and forth over the folded wall. The idea of multibands is that they fill the fitting well. This leaves the rim rolling on two layers of wall without crossing the fold. More control, less overheating. Perhaps in less-than-complete deflation, this may even reduce airloss. They do not claim anything more than enough runflat running to get to safety. Maybe you could have got to that layby without smoking or an escort.

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On 7/9/2021 at 11:42 PM, Cyker said:

… As for PunctureSafe, it's really good stuff - Works exactly as advertised; When I was trying it, didn't get a single puncture and also never had to re-inflate my tyres, where usually I'd have to add a couple PSI ever month or so due to all the speed humps, cushions and pot holes I regularly contend with.

When the tyres were eventually changed a couple years later, IIRC one of them had something like 4 nails in it! Didn't even notice because they'd been sealed so well!

It's also water soluble so washes out very easily, and not that expensive to do per wheel.

The thing that stopped me using it tho' is it unbalances the tyre - At city speeds it's fine, but when I went at speed on the motorway, there were certain speeds that triggered a resonance that made the steering wheel shake quite alarmingly like a load of wheel-weights had been thrown. It would go away as soon as I backed off, but that sort of thing doesn't give confidence!

Many thanks for the evidence about PunctureSafe. Very helpful to hear how it worked in practice. Sounds like it would be the perfect solution, if it was not for the unbalanced running at 60. That would be intolerable. I once had a similar resonance shaking; one car shook on reaching about 65, and driving through it up to 70 was an effective cure. I had it sorted out sharpish, of course. If I remember right, it was to do with wheel balance or alignment.

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1 hour ago, Jouef said:

Perhaps in less-than-complete deflation, this may even reduce airloss …

On second thoughts, I’m talking rubbish - once the bead breaks, air loss would be total. And if the bead wasn’t broken, the multiband would not have come into play.

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On 7/11/2021 at 2:39 PM, Cyker said:

In hindsight I wonder if dripping some water into the valve might have dissolved it and cleared the blockage, but we'll never know!

I have had this problem several times over many years (blockage after injecting 'Slime' puncture prevention through the de-cored valve).  In those three cases I put a sewing needle into the empty valve core; just enough to puncture the plug of sealant.  Afterwards, I had no further problems related to this type of blockage with the tyre or valve. 

IIRC, these were on a car, a motorbike and a bicycle.  Prior to sticking the needle in, I was able to use all my weight to bounce on my footpump - the air would just not enter. 

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Yeah, I experienced the same thing - Tried to force air through with my foot pump and pegged the needle at something like 90PSI but it still wouldn't budge! I was both annoyed and very impressed at the same time :laugh:

Wish I'd thought of just jamming a small screwdriver or something down the valve to clear it - Would have saved a lot of time!

One day I'd like to try a self-sealing tyre like ContiSeal, but at the moment they're too hard to find and the price is far too high - If it was a tenner more I'd jump for it but the ones I've seen were more than double the cost! I'm honestly surprised that tyre manufacturers don't market them more.

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