just want ot know do they fit, improve handling or worsen it and what tyre size is needed[ in regards to wrx 01 onwards 17" wheels on a 1999 car]scooby of course

 

Yes they do fit, loads of people use them including me, the ideal tyre siza is 215 40 17, but you can use 215 45 17's if the wheels come with them, as long as it's not radically lowered they should clear everything ok, if the wheels come with no tyres use the 40's!!