These are all very very valid questions, somewhat complicated by them being at my parents house, not mine, and too heavy to get my Dad to look through.
Tyres are 265 / 60 / 18.
Tread, I'm afraid for now, anyone interested will have to go by the pictures, if you're local someone is most welcome to take take a look, not committed to buying.
Wheels are all in very good condition.
When I'm next visiting I'll clean up and add details if no one has bought before hand.
Thanks all,