Have an opportunity to get some Yokohama Avid Envigor's (205/45R17) for a great price.  First off, will these tires fit on my Fiesta ST with stock rims and suspension without rubbing?  I don't plan on lowering the car at any point.  I just want to know if they will fit without rubbing.  Secondly, any idea how much of a performance downgrade these will be compared to stock tire size?  Thanks!