tire or wheel

So I was driving to work 4am on the parkway and I hit a pot hole drivers side the steering wheel started shaking at high speeds. I instantly pulled over to see if I had a flat I was surprised I didn't hitting the pot hole hard. After work I went to get it checked out at a "well known" place they...

getting ready for a Maine winter... got rid of my Jag x-type for a great deal on a 2010 Genesis, I still have the snows (Blizzak LM-60 225/45/17 - less than 2500 miles) from the Jag. I'm guessing that the sidewall height is not right for the Genesis if I downsize the rims for the winter...but...

I've test driven and am considering a purchase of 3.8 Genesis with 17 inch wheels and 235/55R17 tires. The ride was great, the handling seemed fine. Can someone comment on the likely difference there would be in ride quality and handling if the car was equipped instead with 18 inch wheels and...