I've started researching a basic upgrade to my Campy Khamsins (to fulcrum racing 5 (or maybe 3) - or something of that quality - so not a massive upgrade).

Anyway, my question, in doing the research, I've seen references to 'suitable for winter wheels' or having heavier winter tyres. What characteristics do people look for in winter wheels? Is it worth keeping the Khamsins on until spring?

As for winter tyres, I can appreciate a bit grippier tyre is good for winter, but heavier? Should I hold off fitting my folding conti gatorskins and look for a heavier tyre?

Cheers,