Early A max tire size

15x6 Keystone Classics all round on my '63 wagon. front end lowered almost on to bump stops - no clearance problems with 195/60x15s. rear has a stock 74 Dart 8.25 and 215/65x15s with no problems. the 225/65x15s I had before rubbed going in and out of driveways - probably be ok with rolled fender lips