I feel your pain, our tire size is really messed up and very few options. I just put on a set of Bridgestone Turanza's LS-V. Great tires, nothing like the Crapenzas that came on the car. There are smooth, quiet, responsive and have a pretty aggressive tread. We just had our first snow fall, and I had no problems driving. Then again, I drove properly for the conditions.
FYI there are rated #1or 2 on
www.tirerack.com for thier category.
Excellent overall tire and they come in the stock 225-50-17, this is the sleeper tire, not very many people know about. Tirerack actually told me it was not available in our size, I beg to differ, they are.
Good Luck
FYI, stay away from the Falken Ziex 512 if you live in a winter climate. A buddy of mine racked up his car pretty good in the snow.