I've had a look on Ebay funnily enough and there are some Rennsports and Corsa's part worn for sale.....I dont think I'd take a chance on these from anyone I didnt know or trust.
I think I'm sold on going for a 170 section rear Corsa - my 900ss does not have the power output to justify a 180 and I certainly DONT want to compromise the steering in anyway....
As an aside I've been told to look for the ROAD CONSTRUCTION Supercorsa's as although the compound is the same as the racing tyres the side walls are much stiffer and more suited to raod riding....comments please !!!
Thanx all
Frank