I was thinking of the same after reading other posts on this. I bought mine with 255 Sport Contact 2s on when I changed them they had stopped doing those and put 255 Sport Contact 3s on and they just aren't as wide, completely different. I am now suffering from catching kerbs and fed up with how my wheels look !

If the 275s help to stop this and performance isn't altered then I will definitely go for that size and get my wheels renovated. After compariing the two supposedly same size tyres from the same manufacturer I'm not convinced there are absolute direct comparisons that can be made.

I thought about the rolling radius ( in fact talking to Uk Steve and Woody a few days ago about this very subject and don't think it will make much difference, might get my calculator out !

One of my aims is to look at everyone's tyres at the third UK meet !

cheers,

Paul