California becomes first US state to set efficiency rules for replacement tires

[Abacinator]

how much will these new tires reduce braking performance by? Do they want us to be less safe?

If at all, likely not enough to either be noticable or make any practical difference.

 

[Rtmac]

If at all, likely not enough to either be noticable or make any practical difference.

Much like the mpg increase.

 

[Holeshot]

Ya, it’s not perfect so let’s not do anything!

If the CEC really wanted to save gas, they’d lower the speed limits to 50mph and mandate 91 octane. The mpg savings, esp for newer cars they can optimize for 91, would dwarf these silly tire regs.

??? An engine designed for 87 octane won't receive a mileage benefit from using 91 octane. In fact, the vehicle may have less fuel economy (octane being a resistance to ignite number). Higher octane is needed for high compression engines...which is a totally different rabbit hole.

The idea of "let's not do anything" is childish. The idea of "let's do what's the least disruptive, yet effective" is mature. Pretty much carrot. Not stick. CA's pretty much always been about stick by mandate WRT governance.

 

[Holeshot]

Dunlop responds (and likely is building a the resistance)

Dunlop's statement, filed through parent company Sumitomo Rubber Industries, doesn't dispute the physics. Rolling resistance is real and it costs real fuel. The company says outright that it isn't opposed to responsible efficiency improvements. Then comes the actual argument: a tire is not developed around a single performance characteristic.



That's the whole case in eleven words, and it holds up. A tire is simultaneously a fuel-economy component, a braking system, a suspension part, a noise absorber, and the only thing standing between your chassis and the pavement. Dunlop's own list of design inputs reads like a tug-of-war: rolling resistance, traction, tread life, durability, handling, load capability, weather performance, ride and noise, all competing for the same few millimeters of rubber. Push hard on one variable and the others move, whether the spec sheet admits it or not.

That's also just tire chemistry talking. Low-rolling-resistance compounds typically lean on silica-heavy tread formulas and stiffer sidewalls to cut hysteresis losses, the same ingredients that, done carelessly, can dull wet grip and let more road noise into the cabin. Compliance engineers don't get to optimize rolling resistance in isolation. They solve for it last, after everything else the tire is legally and physically required to do is already accounted for.

Dunlop Says California's New Tire Rule Is Solving The Wrong Problem

When the California Energy Commission voted 5-0 on August 17 to approve the Replacement Tire Efficiency Program, the tire industry had five years of stakeholder meetings to see it coming. Dunlop Tires North America still took two days to answer, and when its statement landed on August 19, it...

autos.yahoo.com

 

[Rtmac]

??? An engine designed for 87 octane won't receive a mileage benefit from using 91 octane. In fact, the vehicle may have less fuel economy (octane being a resistance to ignite number). Higher octane is needed for high compression engines...which is a totally different rabbit hole.

Yep. Honda had a service bulletin for poor fuel mileage and #1 was make sure the customer isn't running higher octane fuel.

 

[Dubbington]

You are mixing this up. Consumers are not getting help w the cost of tires. The cost of tires is supposed to go up. The total cost of gas used over the life of the tires is supposed to go down, more than the increase in tire cost.

Do you believe that though? Supposedly it not the the treat wear that is going to prove. So what could it be? My point is this is a backdoor EPA/Environmental and won't save consumers anything. Just another way for California to pretend they were the cleanest and healthiest state.

I can't comprehend how a tire can improve gas mileage if the tread ware composition is not the issue at hand.

 

[Holeshot]

I'm thinking a new "compliance fee" of sort will come out. A tax (additional on all tires sold in the state. The state is still BK. Money grab is my bet.

 

[Enchanter]

how much will these new tires reduce braking performance by? Do they want us to be less safe?

You're assuming that people actually know how to properly brake.

 

[Enchanter]

Oh dats weird ware dem modz go??

What are you trying to accomplish by these types of comments? I'm hoping for something positive, but I'm not seeing it at this time.

 

[Mike95060]

Well, one might say that a thread about government regulations is political by nature. So, if I had to guess and I don't mean to speak for him, but perhaps pen0rface believes he was highlighting some inconsistencies.

That's a bit of a hobby for him and I find myself in his crosshairs from time to time as well.

 

[GAJ]

Driving back from Costco this AM through Santa Rosa it occurred to me that they could save far more gas by not making you stop at every goddam set of lights through the downtown outskirts.

I think it is part of their "traffic calming" goals.

 

[Holeshot]

Solid point Geoff. Likely more than the tire bill will save...

 

[Alan_Hepburn]

Driving back from Costco this AM through Santa Rosa it occurred to me that they could save far more gas by not making you stop at every goddam set of lights through the downtown outskirts.

I think it is part of their "traffic calming" goals.

Isn't that what the "Automatic Stop/Start" feature on new cars is supposed to address?

 

[GAJ]

Isn't that what the "Automatic Stop/Start" feature on new cars is supposed to address?

Yes, but it does so through added complexity and decreased reliability of the engine.

Another "DOH!" idea.

 

[Alan_Hepburn]

I'm probably like millions of other drivers: the "Disable" button is the first thing I hit once i start my car!

 

[budman]

I just like pointing out the inconsistency where berto starts cryin about poli and then ACTION MUST BE TAKEN!!..but then when he's the offender it's just...bish crickets lol.

You are quite the tool lately.

 

[ctwo]

Driving back from Costco this AM through Santa Rosa it occurred to me that they could save far more gas by not making you stop at every goddam set of lights through the downtown outskirts.

I think it is part of their "traffic calming" goals.

Is that a real goal or are you being sarcastic? It's infuriating! Is that the point, to make driving so frustrating that you just wont do it?

I bet AI could fix this, but where's the profit?

 

[Climber]

Driving back from Costco this AM through Santa Rosa it occurred to me that they could save far more gas by not making you stop at every goddam set of lights through the downtown outskirts.

I think it is part of their "traffic calming" goals.

I've thought that many times when driving through some cities.

The technology exists to time up the lights so that driving at the speed limit should get you through most of the lights cleanly.

I've have gone down Fell St in SF many times where the right speed will get you through every light without stopping, and that was before AI.

Yeah, you have a valid point, if their goal was to reduce gas use there were plenty of other, less invasive, things they could have done. This one has a smell of money from an industry urging them to pass laws that will financially impact drivers.

 

[two wheel tramp]

Driving back from Costco this AM through Santa Rosa it occurred to me that they could save far more gas by not making you stop at every goddam set of lights through the downtown outskirts.

I think it is part of their "traffic calming" goals.

I am beginning to suspect this is the plan in San Francisco. Pedaling is often faster than driving and that’s before you factor in looking for parking.

 

[tuxumino]

read this and wonder about your fellow drivers

Traffic: Why We Drive the Way We Do and What It Says Ab…

Would you be surprised that road rage can be good for s…

www.goodreads.com