big let down car will not move now

thanks for your ideas, I had 15 steel wheels on car with no problems as far front dis calipers, now have 17 wheels I did check for all clearances on the front disc, calipers all looked ok , I will start at the front and jack up to see if wheel rotate then move the rear I am thinking some where the brakes are holding pressure and not releasing the rear brake linings. will up date as I look into it more thanks again.