"...adopt a replacement tire efficiency program “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 on new passenger cars and light-duty trucks.” Replacement tires are those purchased by drivers to replace existing tires."

Tires are not car-specific. This sounds like you couldn't just go out and buy some random tires, you could only buy tires that are designated for your specific vehicle. And that owners of two vehicles with the same size tires would have different allowed tire choices, depending on what their OEM tires were.

Put another way, is this saying you can't buy wider than OEM tires, and that you can't buy all-terrain tires for something that came with street tires?