13" Tyres

Does anybody know what the widest tyres you can get for a 13?

widest i can find are 205's which arent quite big enough  

Bloody hell! How wide do you want them?  

How big are your arches?

Unsure of current situation but used to be able to get wider, think maybe 225/235. The trouble with this is not available in really low aspect ratio and so look too chunky.

yeah they 9.5's all arches have been rolled and it looks like i'm gonna have to run the 205's not brave enough to run 195's