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since this is about fuel consumption I assume that it doesn't apply to EVs
Energy consumption. EVs being heavier, it actually matters more for them
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.
https://flickeralliance.org/ will help you find good quality bulbs
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 consumpti…
no amount of shaming will make me not consider my family's safety. mass transit in CA (eg: https://www.opportunitynowsv.org/blog/nobody-feels-comfortab...) is not safe due to lack of serious policing. my family is prohibited from taking mass transit in usa. It is ok in japan and singapore.
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!
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).
Context: a car magazine simulates a car swerving around a fatal obstacle in lane and then quickly getting back to their lane to avoid a head-on collision. Taller, narrower cars tip over; poor suspension/ESC rip off tires from their rims (debeading); slippery tires send it skidding. Its a great rabbit hole in Youtube.
Earlier quoted context omitted.
Energy consumption. EVs being heavier, it actually matters more for them
the energy consumption of EVs is already massively below gas vehicles. also, as others have pointed out, their tires already are within the regulations.
...“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 c…
> manufacturers could start selling cars with worse tires to bring down the average. OEMs do the opposite already because their official MPG ratings are calculated using the OE tires. OE tires are sometimes criticized as prioritizing fuel economy too much at the expense of longevity and performance. I don’t see a reason that a car manufacturer would be incentivized to help tire manufacturers sell the cheapest tires o…