Your assumption about road surfaces is quite wrong. When I was a young man, UK road surfaces were good and smooth and indeed we used to buy French cars for their supple suspension designed to deal with badly made French roads. Since our road taxes are now wasted on the railways or on things like bike lanes and speed cameras, the tarmac is ignored and is far worse than it used to be. European car makers now test suspensions on british roads because of their roughness!
The question you ask is an intriguing one. The structure of a trad morgan moves and flexes in a way that doesnt happen in a modern car, and with pretty basic suspension with limited movement, it needs to do so. But toughness is about more than just initial problems, its also about repairability and the large number of old Morgans still running says something about that.
Maybe instead of thinking aboutn speed over a rough road you should ask yourself who, you or dad, was having the most fun. My bet would be your dad because the Trad Morgan has one thing that the MX5 doesnt have - character.
Last edited by howard; 28/12/17 09:00 AM.
