I can see where you are coming from, I live on the Brecon Beacons so can also be the victim of extreme weather conditions although, there is not a chance of me taking the XKR out if the temperature is below 10 deg C and shows signs of rain. Basically it will be boxed up in the garage between November and March. I don't know what tyres you have fitted at present, on my daily ride which I use 365 days a year (Mercedes CLK270) I fitted a set of AVON all weather which really do grip the road very well and quite quite. Might be worth you checking the website mytyres.com to see what they recommend