My Sport is still sitting on the original dark grey cloverleaf wheels that Fiat supplied when new. Being a European supplied car this means that the wheel is a 13 inch size currently wearing Pirelli 185 /70/13s.
I flirted briefly with the idea of fitting the alloy wheel style as fitted as OE in the Irish market but had a bad experience with steel wheel bolts wearing away the light alloy. I always intended trying again as I now have a set of suitable wheel bolts but was waiting to get a set of tyres.
That should be soon as my regular wheel choice was always going to be a 14 inch wheel with a more sporty profile tyre. Now that I have finally found a set of painted 14 inch cloverleaf wheels I'll now be sourcing a set of Pirelli P6/P6000 185/60/14s. The old 13 inch tyres can go on the alloys as an alternative look when I feel like it.
Incidentally if anyone is after Pirelli tyres which I've found to be very difficult to source in this size, particularly in Ireland, I use this firm in Germany. A set of 5 P6s costs ?271 delivered anywhere in Europe.....
http://www.eiretyres.com/