not sure if this is the right forum, if not, please move nalang po mods

ano po ba bagay na mags n tire size for the new camry? white pearl color. ideally, i'd like to stick to the original 205/55 R17 like that of the 3.5Q's, but i would consider upgrading to 18in. as well. can anyone please recommend the ideal tire size if ever i do get 18s? as much as possible, i'd like to keep the car's ride and handling characteristics unchanged, so anything over 18 is pretty much out of the question already. also to avoid the risk of having a 'matagtag' na ride na rin. and lastly, would i have to drop the car if ever i stick to the 18s? wouldnt the car look kinda 'elevated' if i dont? please post pics na rin po. thanks