Electric cars are not THE solution.

2 points

How can you not own a car while living in a city with >1m population, are you mad? /s

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10 points

Electric cars are not THE solution.

This is why I raised the topic of airless tires a while back. They’re not the solution, but they last longer than traditional tires. Initially they were rated to last a lifetime, but that’s not profitable so they put an end to that.

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33 points

That does not address the issue at all. The problem is that tires wear, and the particles of tire rubber that are shed are the microplastics.

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8 points
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A tire that lasts a lifetime would shed less particles than one that needs replacing every so many miles all the tires used in the same timeframe, would it not?

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3 points

Not if the way it lasts a lifetime is by being made of the same material that wears off but being made of more of it. 🤷‍♂️

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2 points

Rubber+friction=micro plastics

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12 points

The reason tires need replacing is because they’re relatively thin. Airless tires aren’t wear-less tires.

Not to mention that airless tires make for a horrible ride.

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26 points

Here’s the problem with tires.

If you want long treadwear, you use harder material. But then you get worse traction.

If you want good traction, you use softer material. But then you get worse treadwear.

If you want a car to perform safely on public roads, its tires necessarily need to wear away as they are used. Electric vehicles are presently even worse on tires, as they weigh so much more than ICE vehicles.

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4 points

The amount of time a tire lasts ultimately has fuck-all to do with whether it’s airless or penumatic; it has to do with how much traction it provides and how large/heavy a vehicle it’s supporting. Any tire that is good at its job of providing traction to a big, heavy vehicle like an automobile (and SUVs / EVs / EV SUVs only make this worse) is going to pollute a fuck-ton compared to, say, a bicycle tire or the steel wheel on rail public transit.

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2 points

Tires are a part of life. We can make small changes until we improve public transport infrastructure across the world or we can continue as we have done and drive this planet to extinction.

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3 points

Tires are not “a part of life!” Humanity did just fine without them until not much more than a century ago, despite not having much public transit back then, either.

You know what the real difference, and the real solution today is? Walkable, dense zoning.

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3 points
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I ride motorcycles and tires have always been a major issue with riders because of cost. Bike tires wear out fast even though it’s a lighter vehicle and tends to put on less mileage.

The main culprit that most industry insiders have suggested is that motorcycle tires are purposely designed to not last as long because its so easy to market crappy tires to the vast majority of riders. All you need is have marketing campaign of racers and racing tires and then stamp the name on a tire and sell it to young guys who want to ride as fast as possible … they’ll pay hundreds year after year for tires that only last one season but supposedly give them great performance.

I ride moderately on a 1998 BMW K1200, a fast sport touring bike and I put on moderate mileage every summer … I’m not a long distance rider … yet I have to change my tires just about every year.

Fortnine, a Youtube channel dedicated to motorcycle riding did a great description of this …

https://youtu.be/hEZeR9E3JyY

The giveaway is that you could put a small car tire on a motorcycle and it would last ten times longer … whereas you place a motorcycle tire on a motorcycle tire and it will last for a far shorter time.

Motorcycle tires are designed to not last as long … fast riders can argue that better tires do not last as long and I agree with them … but for moderate riders or just Sunday riders with low mileage, there is no need to have motorcycle tires last for such a short period of time. It’s all meant to sell as many tires as possible for no reason other than to make someone money.

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2 points

Is it not because they have so little contact area compared to passenger vehicle tires?

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3 points

The trouble is that motorcycles are generally way higher-performance than cars (in terms of e.g. HP/weight ratio), so putting low-friction, long-lasting tires on them is irresponsible. It’d be like putting Prius tires on a Lamborghini: sure, you could drive the thing responsibly and within the performance limits of the tire, but it’s missing the point of the vehicle.

Now, if more motorcycles were built sensibly – with much less horsepower – then I’d expect the tires to last a decent amount of time. For example, do 49cc scooters have the tire wear problem you’re complaining about? I’m willing to bet the answer is “no.”

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1 point
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For those who didn’t read the article or aren’t following EU politics, Euro 7, passed in April, explicitly addresses the need for reining in pollution from brakes and tires. Some more information here:

The position adopted by the European Parliament improves the European Commission’s proposal by extending the scope of tyre abrasion limits to all tyres and not just those fitted on Euro 7 vehicles. It also directly links Euro 7 to the work that is being done in the UNECE World Forum for Harmonization of Vehicle Regulations (WP. 29), which will set global rules regarding a test method and limits for tyre abrasion.

There’s a new Euro standard “major version” every 5.8 years on average, so here’s hoping that my outdoor furniture will soon not become completely blackened within a year after the last cleaning.

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5 points
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It has nothing to do with being “not profitable”; they couldn’t find a way to engineer the tires to not be unstable at speeds above 45mph. They sell airless tires commercially today, but it’s mostly for farm equipment that moves slowly.

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1 point
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39 points

If we had those flying cars we were promised, this wouldn’t be an issue.

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48 points

Given how terrible humans are at driving, I think flying cars are a horrible idea.

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23 points

Self-flying AI cars! Think about possibilities! 🫰🏾

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8 points

I think it’s only a matter of time until we get there with drones.

Not the military kind…the ones with four rotors that can already pilot a course and land themselves when batteries run low.

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4 points

They’re testing them out on the East Coast, won’t be long now.

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3 points

Source?

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2 points

Right?! They really over promised the future. I want my money back.

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8 points

I’m looking forward to all the noise pollution. Drones, drones everywhere

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1 point

Compared to now: car tyre roar everywhere. It might be better to have a drone taxi go straight up and away from people.

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1 point
mention of 9/11

Smaller 9/11s would be happening every day if flying cars were common

Also helicopters already exist and they’re basically flying cars

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2 points

What I’m envisioning isn’t piloted by the passengers. Set your destination and it navigates following FAA rules and routes over short distances.

It’s pretty trivial to detect humans and scan faces. Until things improve r these are going to be single passenger only so not much opportunity for a large payload.

With self driving cars, it’s only a matter of time before someone makes a self driving car into a delivery system for a bomb.

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3 points

We need a clever solution to this problem, because our govts are unlikely to solve this through new infrastructure or policy changes.

I’ve been reading about this topic for a while now, and I always thought the tech these guys invented was worth further investment: https://smarttirecompany.com/

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4 points

Less rubber is good but we really need a rubber replacement that is biodegradable.

Nickel alloys are expensive and require some nasty mining so shape memory tires are a stopgap solution at best.

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1 point

Material sciences is a difficult field. People spend years researching one small area just to shelve their research as not viable, too cost prohibitive, or impractical for large scale manufacturing.

I haven’t seen any research into durable biodegradable materials that could hold the weight of vehicles unfortunately, so I think investment will be hard to come by. Though I don’t disagree with the premise that something that can degrade over time, but also not harm the environment would be an ideal solution to the problem. I imagine if such a thing were created it would be able to be applied to many other industries, not just transportation.

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1 point

Michelin and Bridgestone have shown off proof of concept biodegradable tires but nothing to the market yet. It is possible, and will take incremental progress as you say. I’d like to see more work and updates on this.

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