mx5 2.0 wheel
 

hi guys im new to the site will post in newbie in a min. my question is what is the correct size of wheels that should be on my car on it at the moment are 205 50 16 but heard they should be 205 45 17 and am I right in saying the wheels should be multi spoke cause the ones on mine are 5 spoke. any help or advice would be greatly appriciated. scot