I switched from Michelin Energy(Saver)(summer tyre) to Bridgestone A001’s in the mental winter of 2010/2011 as couldn’t get hold of any full winter tyres and was fed up of not being able to get anywhere. Have used them all year round ever since.
They’re brilliant in snow and the wet. The only time they’ve ever slipped for me was in a car park covered in very wet ankle deep slush. Got out without needing a push which was not the case for the other cars with summer tyres on. If the A001’s hadn’t been nearly at the point of changing I suspect I wouldn’t have slipped.
Normally get 25000+ miles from the fronts and 50000+ from the rears
Can’t say I’ve noticed any lack of grip from them in the summer.
Allegedly they have 90-95% performance of summer tyres in summer and 90-95% performance of winter tyre performance in winter. Personally if you’re in the situation where you need that last 5-10% performance from your tyre on a public road whilst driving an estate loaded up with bikes/kayaks then you’re doing something very wrong.
I haven’t tried any other full winter or all season tyres but having used A001’s I’ve never felt the need to change.