HELP!!!!!! WITH RIMS

I BOUGHT SOME NEEPERS AND THEY STICK OOUT OF MY FENDERS WITH THE WHELL ADAPTERS ON THERE MY ? IS IF I DO THE 5 LUG SWAP ON THE FRONT AS WELL AS THE BACK WILL THEY WORK THEY SEEM TO BE THE 18BY8.5 THE GUY I GOT THEM FROM SAID THEY WERE BY 7S AND I WAS GOING TO CONVERT THE BACK AND STILL AM JUST NEED TO KNOW IF THIS WILL WORK BEFOR I SPEND THE MONEY