Standard s and sx rims are (I think...) 4" and 4 1/2" wide respectively, so you couldn't put really wide tyres on. Standard S tyres are, (I think...) 145/70 13's - you'd struggle to put bigger than 165's on those rims.

165/65 13's can be had for about £25 or so each, and would increase the gearing by 2.2%
165/60 13's are a little more, and would keep the gearing near as dammit the same.
You could always look for a second hand set of Sporting alloys, but remember you will need Sporting wheel bolts to go with the wheels, and the sporting 3mm front spacer. (set of 12 bolts and 4 locking bolts are only £25 from Fiat)

If you put wider tyres on, bear in mind that even Fiat recommend you lower it.

Pete.
Cinq sporting 1242cc
Cinqs&Seis Yahoo group
Clubcento

does the spacer make a differnce?

Is adrenaline brown?

Thanks Pete, are you the governing body on all things cinqs!! Thanks for all the help, can you tell me what software you use to convert .cda to .mp3, i installed a cdwriter today and want to turn alot of my cds into mp3's and put them on one disc.

Windows media player usually works but your probably better off with a program like audiograbber available from www.download.com

Is adrenaline brown?

Brickfoot - the Sportings come with a 3mm spacer fitted to the front hub as standard for (I think) clearance reasons.

Baz, I used CDmaster32, freeby download from www.zittware.com

Pete.
Cinq sporting 1242cc
Cinqs&Seis Yahoo group
Clubcento

Thanks Pete.