Live data from Hacker News

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

grist.org

131–140 of 275 posts

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

#131
post #36

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.

I assume you mean about buying less (taxed) gas.

Never fear, California is also talking about shifting to a mileage baded road tax because EVs (which they heavily incentivized) saving money on gas can't go untaxed.

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

#132
post #10
post #8

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.

Mine are really close to needing to be replaced and I’m not looking forward to the 1500+ it’ll cost. I’ve gone further than the est lifespan at least.

you can cheaper ones. i'm shopping for them on discount tires.com and there;'s some for like 100$ per tire.

Look for low rolling resistance. chat gpt helps with this a lot

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

#133
post #114

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 tractio…

Yes, there are trade-offs, but you can get really great tires on all three. The Michelin CrossClimate2 tires are arguably the best traction tires, Consumer Reports estimates 95,000 miles of tread life in their testing (higher than basically anything else), and they got a 4/5 for rolling resistance on Consumer Reports' dynamometer testing. There's a lot of tires that are poorly made and just bad tires. For example, on…

It's worth pointing out the CrossClimate2 tires are all-seasons and exempt from the requirement. The 4/5 is specific to Consumer Reports all-season category - actual efficiency is going to be noticeably lower than the high efficiency tires they are talking about in the article.

But you're not wrong in general. There are a lot of garbage tires. And that's not even considering the intentionally "bad" tires like the knobby off-road treads that also have the side effect of massively increasing road noise and reducing engine life.

But like a lot of the California rules, they have carved out so many exceptions and have no real enforcement mechanism (the worst offending tires are being imported directly from China). So the reality is that there is not going to be a lot of juice for the squeeze.

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

#134

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 tractio…

If they're looking to improve tire energy efficiency with regulation, shouldn't they also make it a citable offense to drive with tires inflated below 30psi? You could probably even train a ML algorithm to recognize images of vehicles with underinflated tires, and send the driver a reminder!

That’s probably sooner than you think.

DOTs are intercepting trucks with drones and measuring wheel temperatures and other metrics to do targeted enforcement rather than pulling over every truck. There’s also pilots of road sensors that can weigh trucks and perhaps other metrics.

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

#136

Earlier quoted context omitted.

That's backwards, trucks are the cause of most road damage in the first place. Trucking companies should pay enormous fees to use the roads given the disproportionate amount of damage they do to them[1]. It should be cost prohibitive to use trucks for anything but local deliveries. Before you say "this will increase costs for consumers," recognize consumers are already paying for these roads. 1. https://roadtax.carli…

Truckers pay for hundreds of thousands of dollars in fuel every year. They pay way more gas tax than you do.

[deleted]

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

#138
post #117

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 tractio…

There are trade-offs, but there huge differences in quality between say a Michelin or Pirelli and a cheap Chinese brand.

I have a Tesla S so that means bigger tyres than most European cars so I feel the price whenever I buy tyres so I once bought some Chinese summer tyres, Triangle brand, they were half the price of the equivalent Michelin. They seemed OK but they wore out twice as fast so it didn't save any money in the end. Now I just stick to Michelin Pilot Sport 4.

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

#139
post #63

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 :-)

IIf you’re over-regulated, you’re bound to get something right every once in a while. To over-regulate and get 100 % of regulations wrong would require someone in the system to be able to tell good from bad, aka competence.

:)

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

#140
post #103

Earlier quoted context omitted.

lol does $3 even buy you one small black coffee at Starbucks? I think it’s close to $5 for anything on their menu.

Watch out, though. That coffee may contain chemicals known to the state of California to cause birth defects or other reproductive harm!

Actually, Prop 65 specifically exempts coffee from the warning requirement.
Post reply on HN