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California's new tire efficiency rules could save drivers $1B a year

122 pointsby littlexsparkeetoday at 2:58 AM171 commentsview on HN

Comments

legitstertoday at 5:06 PM

There are basically three major trade-off when it comes to tire compounds: rolling resistance, traction, and tire wear. You can pick 2 of the 3.

When you shop for tires, manufacturers will try to make this eminently clear in the marketing - you pay a premium for tires that maximize on one or two of these features.

The changes that California is proposing basically means you are going to have to choose between traction and tire wear when shopping. Either super slippery tires, or tires that wear out quickly (hence why manufacturers are potentially behind the proposal).

> The rule also comes with exemptions including snow tires and those used in competition. All-weather tires are also excluded, but the state will track them, as that growing segment may be regulated in the future.

All-Weathers are excluded! Realistically this is a program that would only be effective in California.

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angiolillotoday at 8:51 PM

Too bad they didn't just require manufacturers to publish a rolling resistance efficiency score for tires, like the EU does, rather than a mandate with so many unintended consequences and loopholes. (That would be especially effective at influencing consumer behavior if paired with higher carbon fees.)

jwrtoday at 4:54 PM

The EU has been using a single mandatory tire-label system that has an "efficiency" category, among others, so that you can see the tradeoffs, since 2021.

But of course, the EU is over-regulated, let's laugh at the EU :-)

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whyenottoday at 9:15 PM

It seems like the idea is that we get more fuel efficient tires but at the price of having tires that wear out more quickly? That seems like a pretty lousy proposition, especially when you factor in externalities like all the micro-particle pollution that tires produce and the chronic health effects they can cause.

3eb7988a1663today at 3:31 AM

  ...“designed to ensure that replacement tires sold in the state are at least as energy efficient, on average, as tires sold in the state as original equipment.” 
My nose for unintended consequences says manufacturers could start selling cars with worse tires to bring down the average.

That being said, the quoted figures do sound good. Maybe less compelling in someplace like Texas with very low gas prices:

  The energy commission calculated that more efficient tires cost between $6 and $26 more per set, but that increase is more than offset by reduced fuel consumption. It put net savings at $85 to $153 over the lifetime of the tire when gasoline is $4.60 a gallon, though the savings could be 25 percent higher with this year’s price spikes.
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bsimpsontoday at 9:18 PM

Ridiculous regulations have been California's MO since at least the middle of the last century.

Why in the hell should the government be regulating this?

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raspasovtoday at 5:35 PM

California has about 30 millions cars. $1B total fuel savings are … $33 per year, for a whooping less than $3 of fuel savings per car, per month. Thing of all the places you can go with that extra half a gallon, all the work you can accomplish with that large SBUX coffee. It’s all totally worth it.

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hadlocktoday at 8:43 PM

Two of my cars wear specialty tires, one is a citroen that uses specialty Michelin Pilot-X tires designed exclusively for Citroen (and a handful of Renault) of that era, the other wears very limited production tires designed to go on spoke rim with center nut spline hubs. Pretty concerned I am going to have to "manually import" these from Nevada as they need replacement every ~3 years.

winridtoday at 4:11 AM

TIL we have LED lightbulb rules but every bulb in home depot has terrible PWM that's bad for your eyes.

Another 20 years and maybe the government will finally address that.

On the tires topic, I'm fine with this as long as they don't ban the sale of anything. Let the consumer decide.

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hooloovoo_zootoday at 4:27 AM

I’d be much more interested in particulate pollution limits for tires.

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tlogantoday at 4:31 PM

The energy efficient tires have much longer wet braking distance. And they last less (for similar priced tires).

Anyway, saying how it will save money is not right way how to promote this (it is really hard to predict all 2nd order effects this might cause - including increase of accidents, noise pollution, market forces (less choice), and similar).

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diggernettoday at 7:15 AM

"...adopt a replacement tire efficiency program “designed to ensure that replacement tires sold in the state are at least as energy efficient, on average, as tires sold in the state as original equipment on new passenger cars and light-duty trucks.” Replacement tires are those purchased by drivers to replace existing tires."

Tires are not car-specific. This sounds like you couldn't just go out and buy some random tires, you could only buy tires that are designated for your specific vehicle. And that owners of two vehicles with the same size tires would have different allowed tire choices, depending on what their OEM tires were.

Put another way, is this saying you can't buy wider than OEM tires, and that you can't buy all-terrain tires for something that came with street tires?

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winridtoday at 7:23 AM

Probably the weirdest thing about this is the state doing something that results in it getting less tax money. This was lobbied for by the Natural Resources Defense Council and the Union of Concerned Scientists.

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dogscatstreestoday at 7:05 PM

Ok, does anyone have a list of these new tires that I can source from Costco?

tonymettoday at 9:03 PM

When WA launched the CCA , claiming it would cost only pennies, it ended up costing a lot more per tank. The claimed emissions reduction was very large, and the actual reduction was negligible.

This program claims 2 MMT reduction per year, but that assumes 100% adoption , after they move past the voluntary restrictions , into mandatory restrictions, and will eventually require on-road tread enforcement.

Are you okay with being pulled over for the wrong tread? it's annoying enough to face snow chains enforcement.

The only way to reach 100% adoption is with highway tread enforcement. Like we do for highway emissions enforcement.

What do you think they will use the Flock cameras for?

OptionOfTtoday at 4:26 AM

Dual feeling about this.

Non-OEM tires are usually louder, because they trade in efficiency for noise.

OTOH I had a car that came with Michelin Super Ports and it was a much better ride on Michelin PS4S.

enahs-sftoday at 4:04 AM

Looking forward to picking up new pilot sports in Nevada.

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spullaratoday at 5:11 PM

since this is about fuel consumption I assume that it doesn't apply to EVs

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whatgoodisaroadtoday at 5:25 PM

what an unbelievably hostile cookie banner

reenoraptoday at 3:37 AM

It cost me $1600 to change the 4 tires for my Tesla because they are “energy efficient” and matched my original tires. I do not want the tires for my other car to be this expensive. I don’t care about efficiency those tires are literally 4X the price of my other car a Honda.

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adolphtoday at 4:56 PM

The staff report [0] seems pretty reasonable. Essentially manufacturers measure their tires using ISO 28580:2018 [1] and self-report to a future state tire portal. I wish that test was available when I last bought tires and look forward to seeing it next go round.

Undoubtably, consumers will quickly adopt tires in an exempt category like "Specialty tires, including certain off-road tires, low-speed tires, deep-tread tires, winter snow tires, space-saver tires, and temporary-use tires" and the unintended consequence will be that vehicle energy efficiency as a whole will decline.

0. https://efiling.energy.ca.gov/GetDocument.aspx?tn=269612

1. https://www.scribd.com/document/915700524/ISO-28580-2018

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burnt-resistortoday at 4:49 AM

Typically, there's a trade-off between rolling resistance/energy efficiency and traction/low noise. It's very easy to make long-lasting, efficient tires that are unsafe. It's difficult to make them both categories and quiet.

Maybe single occupancy personal vehicles are wasteful and mass transportation should be invested in rather than shaming individual into token behaviors compared to large-scale waste and consumption sources elsewhere in the economy?

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gosub100today at 3:38 AM

I would like to see a rule added that requires embedding a uuid for each tire so if you litter it, or your trucking company loses a re-tread, the state can chase you down and bill you, even years later. Upon selling a vehicle or replacing tires, your name is taken off the liability list and transferred to the new owner or shop. The retreads alone cost the state quite a bit and are dangerous to remove from the traffic lanes.

somecalitechguytoday at 7:32 PM

[dead]

likelybottoday at 6:39 PM

[dead]

throwitaway222today at 3:37 AM

Commies. Law of unintended - we're probably going to end up with tires that sound like machine guns.

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matchbok3today at 3:28 AM

What a silly law. If a tire is "inefficient" and therefore "bad", why can't California just ban the sale of them? Instead there will be a new government funded office and rating system with "leaf" icons that 95% of consumers will ignore completely.

Like all types of laws like this, the "$1B" claim will never be reviewed or judged to see how accurate it is. (It's not, at all)

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