I unsuccessfully tried to reply to ur msg directly. I've only had the '09 Prius for 250 miles. Insufficient data at this time. Big snows now starting in Chicago. I went to www.tirerack.com. they rated the OEM tires as Bridgestone as terrible 4 snow and rated the Bridgestone Potenza G 019 Grid as much better. Dealer s will not switch OEM tires without $$$$$. It's ur call on '09-'10. If u send a reply, could u tell me how 2 reply 2 ur original msg. Good luck!
