I live in one of the top POTHOLE ridden cities in the world (San Jose!) I would like to change my tires for something bigger/taller/softer on my 2006 mazda3 2.3. One tire company thought I could go from 205/50R17 to 225/50/17. Another said I could only go as large as 225/45/17 which, to my understanding, is no improvement, as far as increasing the sidewall height. Obviously, I am confused as to what might contribute to a softer ride. Anyone know how 'tall' of a tire I could go? Any suggestions on improving the ride?