My head is absolutely fried reading this thread. I have a few questions.
1. Is it really worth it getting winter tyres here in the U.K. when our winters aren't all that bad?
2. It would appear to me that winter tyres are more set up for snow.
3. Winter tyres aren't as good as summer tyres in the wet if you go by the rating sticker.
Here in Northern Ireland I'm more concerned with water than snow. when we do get snow it's not for long anyway.
1. Depends on how much you rely on your car - my Audi was a very expensive ornament the first winter I had it (2010/2011) as the Pirelli P Zeros couldn't cope with the slightest amount of snow.
2. The winter tyres typically sold in the UK are more correctly called 'cold weather' tyres as they remain flexible when the temperature drops below 7 degrees C, retaining their grip when normal summer tyres have hardened and begin to lose grip. There doesn't have to be snow on the ground for them to work better than summer tyres.
3. Again, this will depend on the brand of tyre, but the winter tyres I've got are narrower than my summers and have deeper treads & wider channels than my summer tyres so should be more resistant to aquaplaning in the wet.
I bought mine because of my experience in the winter of 2010/2011, and this is the fourth winter I have fitted them - each year lowers the average cost per winter, as I'm still on the first set of tyres.
I like the security the winter tyres give me, and having seen how they coped with deep snow, slush, ice & frost I've been converted.