should be using 215/40-18 at a minimum, 225/40-18 is also a favorite among many
The 35's will decrease the diameter over stock and substantially reduce the side wall and make for a very rubber bandish look
They also will have very harsh/rough ride and you more than likely will end up damaging the rims.
The wheels will be fine...just get new rubber.
A civic or focus owner will that the 215/35-18's off your hands for sure
