Hi Cliff,
You are right, I should have said Tomy (or Peerless, MAX, Airfix etc.) I thought I recognized the tyres. Somewhere during it's life the CGT kit got plastic wheels in stead of rubber, but I also have an old Italeri offering which also used to have the rubber tyres, before they swopped them for plastic ones.
A few weeks ago I also made a set of 16 inch wheels using the same tyres:
I just had a look at your new update; very interesting! Great
Alex