I'd keep them, all seasons are a road you do not want to go down...
The PS3s are absurdly capable, high performance summer rubber. Them and the Super Sports are regarded very highly.
Spare yourself the misery that all season tires always are and just get a nice winter set of Blizzaks.
2012 Ford Focus Titanium Blue Candy Hatch 2009 Suzuki Swift+ - Traded in 2006 Lincoln Zephyr - Traded in
If you live in Edmonton, AB I would be more then happy to do a shoot with you!