My intention is to use the spare wheel cover I already have for the outer section David, and have it adapted. The 140 x 40 tyres are not available in NZ but the 165 x 400 tyres have been used successfully on the “stop” wheels here. Yes I have heard there are fibreglass replicas of the spare wheel covers available but there is a problem with them fitting a modern tyre. I am very interested to know about the Early Slough built tractions (or lack of) in the UK. Are there really few or even none left. My roadster is the oldest traction in NZ, and it appears to be the oldest surviving Slough built roadster in the world.
Best Regards
Graham