599 owners with factory wheels (any size): What tires are you running?

Very informative chat here.
What are my chances of running sport cup 2s
20X9.5 F 245/35
21X12.5 R 325/30
Without having to deal with rubbing issues. I know the offset plays a big role at this point. Any recommendations would be much appreciated.

 

Rear wheelwells are huge, so likely not too much an issue as long as the offsets are set up correctly. 245/35 20 is OEM front size and the rear 325/30 21s are only slightly larger in diameter (28.7") than the OEM 305/35 20s (28.4") so the ABS/stability control will not be affected. I ran 12.5" NF2s on my 575M with no problems with 355/25 19" wheels. Like I said, the wheelwells are huge.

 

Thank you for your input Sir
Ran 365/25 19s on the rear of my uncles 550 maranello. But when it was time to change tires we went with PSS 355/30

 

Bet they were 345/30 19s. That is what I recommended to replace those 355/25 19 P Zeros that had not been produced since 2008. A bit larger in diameter, but still did not bother the ABS system.

 

The P Zeros were 365s. It was the widest street tire at the time I remember. When it was time for a fresh set,they were backorderedso we went with pss. You might be right a 345 !