I have included photos of the tread from all tyres. They are all quite worn. I reckon they are down to about 2mm in the centre on two tyres, and maybe 3mm on the other two tyres.

I have shown close ups of the centre of a couple of wheels. As you can see they are not perfect, but still perfectly usable.

I used to switch between summer and winter tyres each year, but I don't need these any more.

Collection only, from PA19 (west of Glasgow).