Atto 1 Premium wheel and tyre specs

I was really struggling to find out the exact specifications for the wheels and tyres on the Australian delivered Atto 1 Premium since none of the BYD documentation contains anything, and not even their service people seem to be able to find out, so, for those of you who want to but a cheap spare wheel, I give you the full specs. Hopefully this gets indexed by the search engines as well! Tyres: Hankook ion AS 185/55R16. These do not seem to be available from Hankook in Australia yet, so you will need to buy something else. Rims are 16x6J with an offset of 45mm and 135mm of back spacing. PCD is 4\*100mm on M12 studs. The central hub bore is 54mm. Nuts are 21mm, but they have black plastic covers on them. These covers are best removed with the special tool which can be found in the bag with the tyre goo and pump. As delivered, torque seems to be 110Nm, but I have no way to confirm that this is correct. I am going to head over to my local Tyrepower and see what I can find to work as a spare for touring. I will follow up in this post once I have some options.