Following my earlier comments, I remain extremely happy with my choice of the HS51 XL tyres...and thanks for the recommendation.
Winter isn't the best time to test summer tyres but inevitably most of us only use one set all year round, so it's good to know their strengths and weaknesses.
I've now completed around 3000 miles and encountered a wide range of conditions.
Unsurprisingly the HS51 tyres struggled on fresh, dry snow but as it became wet and slushy the excellent anti-aquaplaning characteristics kicked in and grip levels improved massively.
Similarly, they don't really like damp road conditions, it's by no means bad but you do experience that 'greasy' sensation that comes from a road surface that's neither wet nor dry.
Wear rate so far appears excellent, as per my previous Kumhos, and now that I've had two bearings replaced, I can really appreciate the smooth and quiet ride.
The progressive and very positive grip levels, wet and dry, is very reassuring.
This is my third set of different summer Kumhos for this car, each having slightly different characteristics but overall with nothing really to choose between them, they've all been good, very good.
Will update again after some proper summer weather but I'm confident that I'll be just as happy with them and that there'll still have many miles of life left.