Wheel diameter

[Steve Jones]

Unless the Amilcar is a C6 you should do ok among that lot.
I'd be careful about using narrow section bike tyres. They aren't really designed to accept the forces cars put into them. I'd use either sidecar tyres, or those designed for cars - available in the U.K.

Alan's warnings about motorcycle tyres are worth heeding particularly in cars used for competition - not that I would ever consider disagreeing with him when it came to tyres!!

However, I can say, been there, done that. My car still has the bruises to prove it and my shoulder has never, really, got fully better. Whilst the 'bike tyres it was on weren't 100% to blame for my Loton Park roll in 2014, they contributed to it significantly and I learnt my lesson the hard way. Tyres designed for car use only for me since then. My personal preference is for Longstones but other makes are, of course, available.

Steve