Hi all!

I'm new to the site, but I'm VERY familiar with forums. So right away, IM SORRY for posting without doing a lot of searching. My friend has a Crossfire (I don't know what year or model at the moment), and she's looking for winter rims/tires. According to her mechanic tires on her rims are going to be roughly $1500, and there is no other option. She was told that because of the staggered rims she's not "allowed" to do anything different.

I'm sure everyone is familiar with the sizes, but here are hers anyways:

front: 225/40/18
rear: 255/35/19

What do other people run (sizes) for winter? Would it be okay to run identical sizes on all four corners for the winter?

Thanks in advance!