thanks Emma think I will stick with 255.You could but if you are thinking of doing that with MP4S tyres be aware the the old MPSS tyre came up "larger" as they are very square in profile compared to equivalent sized tyres. So a 265 MP4S would be nearer to a 275 in most other tyres. The other thing to bear in mind is they are a performance sports tyre so it makes sense to get the best from them by fitting the correct size
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