To have a look at what your alloys look like on the barchetta before buying try here.....
http://www.rochfordtyres.co.uk/sear...teria=any&PT_ID=all&Make=Fiat&Model=Barchetta
http://www.rochfordtyres.co.uk/sear...teria=any&PT_ID=all&Make=Fiat&Model=Barchetta