Bump because my Pirellis are about half-worn so I’ve been researching tires on US sites, which have very little info on rolling resistance and such.
However, I got the idea to look at the EU tire labels. Seeing the labels makes me conclude there’s no way the T0 PS4S was a beta EV tire.
Here’s the T0 PS4S. You'll see it gets a D in efficiency.
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Here’s the P Zero Elect. It got bumped up to a C, which is likely the reason Tesla adopted Pirellis til now.
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And here’s the Michelin EV tire, which gets an A across the board. You’ll notice it’s a 21” tire because the 20“ tires haven’t released yet.
This efficiency rating is on par with the MXM4. If these government test results are legit, our 20” Überturbines could realistically have the same range as 18” Aero wheels with the caps removed.
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I‘m excited, personally. If they launch by the time my Pirellis wear out, I’ll definitely give them a go.