Real World Mileage for Stickier Tires
Just sharing some experience with some sticky summer tires:
General G-Max RS 225/45R17, 80-95F mostly dry day, 487 mi trip: 3.6 mi/kwh
OEM Michelins, 70F with no A/C: 4.4mi/kwh
Generally speaking, the sticky tires appear to chop a solid 20% off the range. 210 miles range is about all I get now with my usual CC set to 72mph on the highway and some mild A/C usage. Before, exceeding the stock 260mi range wasn't hard as long as I kept my speed in the low to mid 70's without the cabin heater on.
Was it worth it? I don't know. I only got maybe 20k miles out of the original tires since I drive pretty aggressively. I figured that with stickier rubber, my normal driving wouldn't scrub so hard, but of course these tires don't last much beyond 20k in any scenario. So basically, they were cheaper than LRR EV tires, grip better, and last about as long. The downside is the range.
For me, this doesn't change my lifestyle much. There are some trips where I have to add or lengthen a fast charge but those trips are ~1/month. And the car grips massively better. That said, the car's awful suspension geometry/setup means that it still tends to scrub the front tires LONG before they're ready to give out, and the tires can't fix the massive under steer problem. I think that massively stiffening the rear (especially in roll) and increasing the damping all around (but particularly the soft rear end) would help a bunch. Maybe some extra front camber would fix the wheels from falling over in a turn.
Anyway, that's what I've got. If you want stickier tires, go for it, but your range will be about 200mi with 70-74mph cruising speeds.