Soldato
I'm not sure - as a complete layman mind, it seems unlikely/daft that Honda (or any other maker) would come up with a system that would effectively limit you to one tyre... What if Michelin or whoever stopped making it, would then then expect an owner to live with the warning.Dunno. I wouldn't be so sure on that. They might have fitted something they had which was close enough.
Then that might also align with what the dealer is saying.
If its a wheel speed sensor system, then even a different tyre width or sidewall percentage could cause an issue.
In all the years I had a car, and the numerous tyres I went though, I never once heard of anything so restrictive - it was always a case of giving them the three measurements and occasionally a rating, and it was job done.