Sumitomo HTR A/S PO3s have been able to handle anything that comes our way.
We wore out the OEMs at 40k and picked up a set of Sumitomo P03 tires. Extremely happy with them. They're not strictly EV tires so there's some efficiency loss (maybe 5-10%?) but the car is much grippier, especially in wet and slushy conditions. Also, it's just way more comfortable of a ride. Kind of doubt they'll last through the manufacturer warranty of 50k miles but also it was just under $100/tire installed at DiscountTire so I'm not terribly concerned
I switched from cup2's to vitour's on my 981 gt4 and have no complaints. They last longer and I think they more consistent than the cup2's.
Falken also makes several tires in that size. Falken are made by Sumitomo and excellent. My Sumitomos last at least 60k and are about $95-120.
I have these guys on my V8 SUV. Didn't give them much thought, was a good deal, and ride quality is much improved. Mine balanced fine and look pretty new after a year and almost 10,000km. I don't drag or track race, I'll floor it occasionally for a thrill and I drive probably 160km/h max on highways.
Having run a C6Z06 nationally, I know the struggle of having wide wheels and not a lot of tire choices. If I were still running it, I'd look at the Vitour P1s.
as a tire, they seem slightly dubious as far as the 200tw rating goes (although a052s are super low-duro too). they don't work well on heavy cars and from a buddy who runs them in practice/at non-scca events, they seem to overheat/slide a lot (corresponds to what the GRM article states). but they for sure are quick.
For $70 I can buy Japanese made Sumitomos which have perfectly adequate grip in most conditions and long life, but they are quite loud due to the aggressive tread.
I learned this for myself a long time ago when I had decided to go cheap for once and get some Sumitomo. I could feel the car's handling characteristics changed immediately (it felt like the back was "gliding" in the turns leaving the parking lot, which was probably sidewall flex).
They're slower than the top tires(re71rs,a052,rt660s)
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