As an add on, I just checked the Wolfrace website and the discount code mentioned by chippy1970, 2023v, still works!
Looking on Rimstyle website for prices to include tyres, and if you wanted to include the tyre package, the sizes offered, for 18" rims, are all 235/50/18. Would 255/45/18 also fit ok though?
I looked at the Wheelbasealloys website for some sort of comparison and they do not offer a tyre package for these although I was sure they did.