The reporter who initially “broke” the story was challenged online for leaving out meaningful context - just running with “70% less tire options”.
Someone from the committee asked her to consider the full scope in her reporting then she ranted “you don’t tell reporters what to do”. Then she did release a correction but still one-sided.
My gut reaction is to be skeptical of new restrictions but this
seems aimed at better efficiency which could be good all-around if successful. Also, there is an actual exception for high-performance/sticky, off-road, motorcycle, winter/snow, all-season... It’s primarily aimed at street/regular use tire efficiency.
Also, there’s no clear partisan lean based on proponents/opponents:
Proponents
- Michelin
- Bridgestone
- Consumer Reports and a bunch of similar interest groups
- Coalition for Clean Air and a bunch of environmental groups
Opponents
- Goodyear
- Continental
- SEMA and a bunch of tire agencies
Neutral(ish)
- Dunlop - they just point out it could hurt consumers if manufacturers don’t catch up to the current standards
My take
- If it leads to better tire efficiency (cost/energy) without sacrificing safety

- phased strategy through 2033 giving manufacturers the opportunity to catch up

- has a much broader coalition of proponents

- just ends up being purely environmental increasing overall consumer costs

- compromised safety/increased traction related accidents
I suspect that Michelin and Bridgestone have a current advantage over Goodyear and Continental. Bridgestone reportedly worked with the CEC on rule.
Overall I’d give it a 
- provided it lives up to the claims
- the high-performance exemption remains in place
- there’s no enforcement, citing people who buy tires out of state