I am buying (built already and in shipping) a 2007 C4S with SPORTS from the factory. From what I read that means that it will also come with 17 mm spacers. In order to use a set of used 2006 C4S SPORT DESIGNS (with winter tires) on this car, I will have to remove the spacers. Is this correct. Is it a big deal to remove the spacers. How much are the shorter wheel studs. Thanks for the help.