Ian Newham: 2001 RS - tank had expanded lengthways but still goes back on with a little jiggling. No blistering though.
The same with my 2001 RS. The tank seems to have stretched a cm or two. I have always used standard unleaded since buying the bike in November 2001. The fuel is left in the tank over winter when the bike is laid up although I do try and start the bike most weekends and ride it round the garage yard.
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