7,
planning to change my
195/65R15 (dia 25", side wall 5")
to
215/50/R17 (dia 25.5", side wall 4.2") (difference 1.9%)
or
215/55/R17 (dia 26.3", side wall 4.7") (difference 5.3%)...(this option aint exactly # 7, cuz i dun want to decrase the side wall much, and make the ride harder)