If running the escort version of the volante (as opposed to the cortina version), a 205/60 does work quite well.
The only issue I had was the tyre rubbing slightly on the rally pack front spoiler when on 3/4 steering lock, but not on the strut.
Note that the spokes on an escort volante lean in at the rim end just slightly, where as the cortina spokes lean in quite a lot and a thus the whole wheel is offset towards the strut a lot more.
Ash