You could fit 18s with no problem. Only problem you will have is if you could afford it or notrobalino1 said:HI EVERYONE I OWN A 1997 ALTIMA GXE. IT'S TIRES ARE THE STANDARD SIZE 205/65 R15; I WAS WONDERING CAN I PUT A BIGGER RING SIZE TIRE ON MY CAR SUCH AS AN R16 OR R17 ON MY CAR. THANK YOU FOR ANY INFO.....