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Michelin's airless tires are scheduled for market launch in 2024

interestingengineering.com

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Re: Michelin's airless tires are scheduled for market launch in 2024

#31
post #26

> Rechargeable, connected and sustainable Hmm. Do these have batteries and computers inside? Do they have to? Making things “smart” usually decreases the time span.

>Making things “smart” usually decreases the time span.

how else to add planned obsolescence to such a durable product?

Re: Michelin's airless tires are scheduled for market launch in 2024

#32

GOOD point by my wife, why don’t we work on puncture resistance instead? Reinforce the tires with Kevlar or carbon fiber?

Because traditional tires wear down over time even if they aren’t punctured. The goal is to make ones that last longer than that. Also, airless tires are puncture proof by definition.

Airless tires will still wear out though. That’s the nature of friction with the road. The important one is: how much more durable are these compared to your normal rubber ones?

Re: Michelin's airless tires are scheduled for market launch in 2024

#33
In 'The Wide Lens' by Ron Adner, he uses Michelin's run-flat tire initiative (PAX) to show how brilliant innovations can fall flat (sorry, couldn't resist) if the entire ecosystem / supply chain is not enabled.

In the case of PAX, the service stations (75% of the market is replacement) were not ready.

Hopefully, Michelin has the full ecosystem enabled in this case, as this seems promising.

Re: Michelin's airless tires are scheduled for market launch in 2024

#34

Even if these tires aren't good enough for the snobs who want everything to be silent and handle perfectly they'll be great for trailers, yard trucks and other rarely used vehicles that rack up few miles and run run old-ish tires (which tend to be more plagued by slow leaks and whatnot) but still need to go highway speed.

Road noise isn't just a driver aesthetic preference, it's a form of pollution that has direct impacts on human and animal health. I could still be convinced that the sustainability or safety (from fewer blowouts) gains of these would outweigh that, but it's important to consider beings outside of the auto cabin.

Rubber material properties (hardness basically) is a rounding error compared to tread design in terms of road noise and the dominant factor in terms of how long it takes the tire to wear down.

Re: Michelin's airless tires are scheduled for market launch in 2024

#35
post #23

Even if these tires aren't good enough for the snobs who want everything to be silent and handle perfectly they'll be great for trailers, yard trucks and other rarely used vehicles that rack up few miles and run run old-ish tires (which tend to be more plagued by slow leaks and whatnot) but still need to go highway speed.

Michelin has been selling these under the "Tweel" name[0] for skid steers, commercial lawn mowers, and other mid-sized wheeled equipment for several years now. Supposedly, they improve the handling and ride of the equipment since the Tweel's internal structure flexes more than an air-filled tire and therefore adds more of a suspension to the tractor. [0] https://tweel.michelinman.com/light-construction-products.ht...

I know. But unfortunately they're not rated for (and don't last long at, tread tends to separate) road speeds.

Various manufacturers have been teasing "airless" prototypes for highway use for a long time. I hope this one actually goes somewhere.

Re: Michelin's airless tires are scheduled for market launch in 2024

#36

GOOD point by my wife, why don’t we work on puncture resistance instead? Reinforce the tires with Kevlar or carbon fiber?

Kevlar-reinforced tyres exist, they’re used on off-road vehicle. I expect they don’t protect much against the sort of very thin puncture you’d find on a standard road because there’s simply too much pressure being applied when driving a car over a nail/screw.

I don’t think carbon fibre would be of any use here, it’s not super strong against high transversal forces AFAIK. It’d mostly be useful for sidewall rigidity (and I’d be surprised if it didn’t already exist).

Re: Michelin's airless tires are scheduled for market launch in 2024

#37
post #11

What impact does this tire have on car mileage?

Contact patch and rubber compound being close to constant when compared to a pneumatic tire the mileage impact would primarily depend on weight. I don't think it will be much of an impact since Michilin is unlikely to make a very heavy tire as that would have bad NVH characteristics which don't jive at the high end and reading between the lines of the press release stuff seems to indicate that's where they're targeting.

Re: Michelin's airless tires are scheduled for market launch in 2024

#38

GOOD point by my wife, why don’t we work on puncture resistance instead? Reinforce the tires with Kevlar or carbon fiber?

Because traditional tires wear down over time even if they aren’t punctured. The goal is to make ones that last longer than that. Also, airless tires are puncture proof by definition.

[deleted]

Re: Michelin's airless tires are scheduled for market launch in 2024

#39

Earlier quoted context omitted.

Because traditional tires wear down over time even if they aren’t punctured. The goal is to make ones that last longer than that. Also, airless tires are puncture proof by definition.

Airless tires will still wear out though. That’s the nature of friction with the road. The important one is: how much more durable are these compared to your normal rubber ones?

Per the video, their plan is to 3D print additional sustainable tread on demand and/or switch you over to snow tires if you need them using 3D printing techniques while you have a snack (apparently)

Re: Michelin's airless tires are scheduled for market launch in 2024

#40
post #26

> Rechargeable, connected and sustainable Hmm. Do these have batteries and computers inside? Do they have to? Making things “smart” usually decreases the time span.

In the concept video it’s shown that a 3D printer can print layers on top of the tyre. I think this is what they meant by rechargeable - the ability to “fix” the tyres.
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