Live data from Hacker News

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

grist.org

201–210 of 275 posts

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

#201

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…

[deleted]

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

#202
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…

> ... 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.

That is incredible. My front ones are toast after only 15 000 miles / 25 000 km ( Continental Sport Contact 3 / N0 rating) and two years. 95 000 miles and I'd need to change them not because of wear but because they'd be legally too old.

At some point I'll buy a reasonable car.

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

#203
post #173

Earlier quoted context omitted.

It absolutely has good aspects, no doubt, but nothing about this is unquestionable. It’s significantly grayer due to all kinds of second order effects, even if you really believe in the problem and want to solve it. Depends on how many more accidents worse-gripping tires cause that result in more totaled vehicles that require replacement and what people replace them with. Depends on how much faster people have to rep…

These are all valid questions but: > Depends on how many more accidents worse-gripping tires cause The US has an unusually high number of road deaths: https://archive.cdc.gov/www_cdc_gov/media/releases/2016/p070... and a lot of them are preventable. 1% less traction (or what ever it might be) is unlikely to be as bad compared to drink driving or not using seatbelts.

Valid point, I will grant that. It's also entirely possible that accidents due to less grippy tires are not evenly distributed (for example, due to climate or geography) and that slightly worse traction is less of a problem for most of California's urban population in particular.

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

#204

Earlier quoted context omitted.

Can you get LED lightbulbs you like online?

Can you get (non-LED) lightbulbs you like online? No. They are illegal.

I don’t know that they are illegal, but they are legitimately useless. You can get high-quality LED bulbs and very warm LED bulbs. All my LEDs are about as warm, maybe even warmer, than incandescents. Like orange in color.

LEDs are universally better. They use way less energy and last way, way longer. The end result is you save a shit ton of money.

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

#205
post #114

Earlier quoted context omitted.

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…

> ... 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. That is incredible. My front ones are toast after only 15 000 miles / 25 000 km ( Continental Sport Contact…

If you put Cross Climate 2s on whatever German car your Sport Contact 3s came on you'd instantly regret it just because of how it drives.

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

#207

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…

Ah yes, California the land of regulations. A compliance tax for the tire companies, less freedom of choice from consumers, and likely inferior products for a hefty subset of use cases. Tale as old as time.

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

#208
post #187

Earlier quoted context omitted.

You shift your route. Not the load

> The road scales are easily gamed, or just avoided. Yes, they stated that in the second half, and I addressed it. What's the first half?

Most scales don't even log/alert/flag weights below the maximum legal axle weight or axle group weight. So a 2-axle truck can weigh 40k and nobody will hear about it. In the event that they're fancy and integrated with an ALPR (assuming your plate is readable, lots of ways to game that on a box truck) the scales don't typically extend onto the paved shoulder. Even if they do you slow down and drop a tire off the pavement. And if all that fails, if you have air suspension you can dump the axle as the truck is going over the scale.

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

#209

Earlier quoted context omitted.

As a Scandinavian that sounds normal, and has been my entire life. In fact you don't need to buy gas to use the free air or water, it is just out in the open in a service cabinet or on the side of the building. (There is sometimes a sign that the water is only for cleaning your windows / mixing windshield fluid from concentrate, not for filling up RVs, and the flow is very slow.) I'm curious, do they actually check t…

Free air is very common these days. I don't think a purchase has ever been required for free air anywhere I've been. Occasionally you need to go in and get a free token since the air machine is still coin operated, but I've never been asked to prove a purchase.

The one near my house has a card reader :(

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

#210
post #114

Earlier quoted context omitted.

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…

> The Michelin CrossClimate2 tires are arguably the best traction tires, In their class, but not in general. They are all-season tires. They don't perform as well as winter tires in the winter, and they don't perform as well as summer tires in the summer. They're also a terribly mushy tire. They feel like you're floating around on the road and wallowing through the turns. This doesn't matter in the slightest to someo…

I’ve not noticed a mushy feeling on my wife’s Mazda CX-9 with CC2s, but tbf it’s an SUV. One of the sportier SUVs around, but still.

For reference, I used to daily a Honda S2000 (not with CC2s, obviously).

Post reply on HN