Question about tire size for 14"X 7" Mopar Rallye Wheels

I'm still debating my next move. I am not sure if I should just look for some different rims or try to bite the bullet and save my coin for a new set of 15" Rallye's. A friend of mine has a Duster with Weld Prostars and he is running an insanely wide rear tire on his car. It looks really cool. I am still kind of uncertain on which direction I will proceed in. Thanks for all the input guys.