Yes you can but you have to now that you have to change the tire size to like : You had 185-75-14 and you can change them to 185-65-15 or 185- 45 - 16.
Can I Change The Rim Size On My Car?
I have a nissan altima 2005 mode, it has 16'' rims according to manufacturer specs. Can I increase the size to 18''
Rim sizes can always be changed to go larger but not always to go smaller. Just have to be sure that the tire will still have room to turn without rubbing fenderwells. What kind of car is it?