Guys, you may like to know that I went with the Avon ZZ3's in the end, unfortunately they don't make them in a 255 fitment anymore, so in the end I stuck to 225/40 all round.
Even so, this has made a good improvement from the unevenly wearing Pirelli's, differences include no sign of 'judder' under harder braking and a feeling of more control (confidence), even dare I say more 'comfort?'
All in all, very good value for sub £500 fitted & balanced for 4 tyres.
