One more data point on square setup.
Switched from 21" Arachnids (plan to sale them)
Swtched to: 20x10" ET35. Tires 285/35/20 Michelin Pilot Sport AS 4.
I read all threads and still was not sure what combo is working the best for plaid & med+ driving (no track/strip)
Thanks to
@Muzzman1 who clarified lots questions, appreciate that !
I went with 285/35 because final diameter of wheel will be very close to original. Front got wider +20, rear narrow -10, in total contact area is +10, so efficiency will down, grip - down, staring - down. A little. But comfort of driving increased substantially, my family spotted that immediately.
Yeah, noice if Michelin Pilot Sport AS 4 on speed is higher, but not bothering.
After driving 100 miles, there is no doubt PS4S is superior tires. But I intentionally installed AS 4 for higher threadwear.
2c