My girlfriend is in need for some winter tires after last winter in her 07 3 was not too good. I found a set of used Bridgestone Blizzak WS-50 mounted on 17" Kazera wheels. Thy has them for his RX8 so I know the rims will work but they are a little large...thoughts? The tires are 225/50QR-17 and rims are 17x7. he said that they have been used for two seasons 4-5k miles. The tread looks good. He is selling them for $555 decent deal or can I get a better deal?