I should have some 14" genuine Fiat alloys with good (5mm treads) Yokohama s.drive tyres coming up for sale soon. I just need to confirm the condition of the original steel wheels before I decide whether I can return the car to stock configuration safely, making the wheels available seperately for sale. Trouble is though, I don't think 14" would be big enough for the bodykit. 15" should look about right. Don't forget to fit the right size tyres. 195/45 R15 should do it. Any bigger than 15" and you start struggling to find tyres of the prescribed width and rolling radius, and the ride quality seriously suffers.