@JimShaw For the PS4S on the 20x9" Uberturbines
I would probably skip 245, and either get the Tesla spec 235/35R20 (only the T0 / T1 Tesla spec in that size!), or go big with the 255/35R20 regular version - which
if I recall correctly people on these forums have shown it fits (clears the knuckle up front) - but please verify that yourself don't take my word for it!
As I recall, the tires that have trouble fitting in 255/35R20 are usually allseasons that come with taller tread. Most summer performance tires come with shorter tread and fit - but definitely do your own due diligence on this.
I really liked the Potenza Sport. Besides the improved grip, they felt sharp and responsive even in 245/45R18 (much taller sidewall). However be aware they do have more road noise than the Tesla OEM foam-lined PZ4. I didn't find the Potenza Sport too loud at all, I've had much louder performance tires and I thought the Potenza Sport were totally fine in that regard, also no complaints from my wife, but they weren't the
quietest performance tires either - the OEM PZ4 win that award in my experience. I've no idea how the PS4S noise level compares...but I would guess the Tesla spec foam lined PS4S would be a bit quieter than the Potenza Sport, but not as quiet as the Tesla spec PZ4.
The Potenza Sport were much quieter than the PZ4 in hard driving though. That matters to me.
Basically if you like driving you car hard and fast and sometimes approaching its limits, the Potenza Sport are great for that. PS4S should be too.
On the flip side if you liked how quiet the PZ4 were in more casual driving, and never felt they lacked grip, then maybe they're the better tire for you.