First two sets of Avons went quickly. Blockleys lasted much longer but I was having difficulty getting any that weren't already ten years old. The Coker Excelsior line is superb. Dead ringer for the Blockley but the formulation is much better.
I don't know just what Morgan was thinking but the stock Avons have never been rated for steering. They are strictly meant for rear/side car use and are marketed as such.