help - will these fit on a 74 Duster

Hi,
I found a set of ansen slotted mags that are 14x6.75" with 4" backspace. Would a 215/70/14 fit on these for fronts and 225/70/14 for rear without any clearance issues? Can I go any wider with tires for rears or any skinnier for fronts on this size rim? Thanks in advance.