Can you put 20 inch rims on a Honda accord?

You can put any size rim on any size car if you would like, however, is it practical!? It will depend on the year of the car. Newer Accords have large fender wells allowing for larger diameter rims. Bigger the rim, thinner the tire....visa versa. Look at the road conditions of where you live. If you have potholes everywhere..you'll destroy big rims with small tires. Bigger size wheels may cause tire rub when turning, especially when backing up. Ride comfort will most likely decrease as well your transmission may have future problems caused by the additional rotating mass(weight of wheels) it must endure. Go with 18's max on early and mid 90's models and you could comfortably fit a 205/35-20inch tire wheel combo on newer models, '97 on up.