Thank you George. I have followed the links. I will take your suggestions to a reputable tire shop. I have a concern about putting a tire with a minimum rim width of 5" specification on a 4" wheel rim. I will post my findings later.
Back in the bias-ply tire daze exceeding the recommended tire width more than one inch could result in poor handling/braking and eneven tire wear as the outer treads could make minimal/no contact with the macadam.
Given the relatively "soft" sidewall on a 65 profile radial tire one can safely and confidently run a 5" wide (bead) on a 4" steel wheel for many miles and in any season.
At one time a popular option was to run 122 wagon wheels which are 4 1/2" wide. Others cut the 4" wheels then rewelded them to produce a 5"-6" wheel - dangerous if done by an amatuer.
If this were 1958-62 we could visit a salavge yard and pick up four perfect Desoto 15X6 wheels which would bolt right up with correct bolt pattern and offset.
Again, given the availability/size limitations of the current market the 185-65-15 tire is a go for the 15" wheel on the Amazon, 140/160/P1800 Volvo.
Cooper is an excellent tire, made in the USA and found most any Sunday going 'round-n-'round with E Jr.
Coker tires are made in many places.
George Dill