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Old 12-08-2020, 03:43 PM   #31 (permalink)
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California is stupid. Mandating which tires people can put on their car isn't going to do anything towards fixing them owning the top 7 or so spots for most air polluted cities in the US.
I guess they just want to look like they are doing something.

They really think forcing people to buy a certain tire will "significantly reduce fuel consumption" wow they are really on something. We already know going from an economy class tire to the best or one of the best fuel economy tires only nets about a 5% gain. On a pickup or SUV going from the worst mud tires to a highway tire nets less than 10%.
As we have established people who wear out set after set of mud tires or aggressive all terrain tires with 99.99% highway miles don't care about fuel economy at all.

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Old 12-08-2020, 05:29 PM   #32 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
California is stupid. Mandating which tires people can put on their car isn't going to do anything towards fixing them owning the top 7 or so spots for most air polluted cities in the US.
I guess they just want to look like they are all.
OEM Only is about as bad as Europe with all their extreme “only 4 “ requirements and checks

Getting places to just mount a blasted tire in place of a failed one is hard enough out here in the sticks with all the self imposed made up rules.

Walmart didn’t want to replace one of my tires with a hole in it because my spare was a different brand. They ended up putting the tire in the wrong position leaving the tire with the hole in it on the car and I had to refuse to take it and they didn’t want to mount a tread in place of the failed tire was like fighting a crew of mental midgets.
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Old 12-15-2020, 03:04 PM   #33 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
California is stupid. Mandating which tires people can put on their car isn't going to do anything towards fixing them owning the top 7 or so spots for most air polluted cities in the US.
I guess they just want to look like they are doing something.

They really think forcing people to buy a certain tire will "significantly reduce fuel consumption" wow they are really on something. We already know going from an economy class tire to the best or one of the best fuel economy tires only nets about a 5% gain. On a pickup or SUV going from the worst mud tires to a highway tire nets less than 10%.
As we have established people who wear out set after set of mud tires or aggressive all terrain tires with 99.99% highway miles don't care about fuel economy at all.
Yep, most of the miles on my Jeep's mud tires have been on pavement. That's because it takes a ratio of 10 miles of pavement to 1 mile of mud to reach the hunting spots.

On the pavement, the mud grips are a waste of energy. Off the pavement, anything less would be a waste of time.
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Old 05-25-2021, 05:00 PM   #34 (permalink)
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Another 6 months go by and still no Fuel Economy Regulation on tires:

https://www.transportation.gov/sites...t02072020r.pdf


Further, the California Energy Commission was supposed to start hearings on tire efficiency. I signed up for email updates, but have not yet received any.
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Old 02-15-2022, 07:39 AM   #35 (permalink)
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Update: There is a January 2022 report on rulemaking out of the US Federal government - US DOT. This is the first update since Aug 2019.

The report says that there will be a rule published Sep 30, 2022. What usually happens after that is a comment period where anyone can critique, comment, praise, etc. the rule. Followed by a revised rule based on those comments.

It's not much, but at least there appears to be some movement.

Please note: The original rule was presented in March, 2010, but was withdrawn after the comment period.
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Old 02-03-2023, 08:24 AM   #36 (permalink)
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Update: On Feb 14, 2023, the California Energy Commission will present its proposal on tire rolling resistance:

https://lnks.gd/l/eyJhbGciOiJIUzI1Ni...153911824768-l

Highlights:

They are using the same scale as the European Union, except instead of using letters and colors, they are using stars.

They plan on having a database populated by the tire manufacturers which would include the RRC value (Rolling Resistance Coefficient), and Peak Friction from the UTQG traction test (Currently the UTQG rating is based on the sliding value), and the MSRP (Manufacturers Suggested Retail Price) - along with a whole lot of the usual stuff like size, make/model, etc.

They plan on implementing the rule on Jan 1, 2026 - and plan on banning any tire in the 1 and 2 star range. (I suspect that is a bargaining position)

I see lots for the tire manufacturers to object to. I don't think the rule will be implemented as published.

On a side note: NHTSA has indicated they plan on publishing a rule on May 23, 2023. This would be the 5th or 6th time they've had a date that came and went. I wonder what they will do now that California has acted.
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Old 02-03-2023, 12:53 PM   #37 (permalink)
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The information part sounds great, about time! The banning part, less so.
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Old 02-03-2023, 01:20 PM   #38 (permalink)
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publishing RRC data

If California does it, it potentially provides data globally.
If one buys the 'house', the manufacturer is obligated to reveal it's square-footage, and whether it has weather stripping, attic ventilation, or any thermal insulation in it or not.
Kinda like a SEER rating or Munroney decal.

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