on a 15" wheel you have a lot of choice. Many like to fit Avons, also Vredsteins (Sp??).
You also have the option of fitting "All Weather" tyres, which are great for those chilly but bright winter days.
I use my Morgan whenever it is possible: registered in April 2014 she is close to 40,000 miles and runs like clockwork.

Tarka the 'Otter Mog
2014 Plus 8