Tire size suggestions?

Man there is a lot that goes into deciding tire size. I just got rims for my 74 Duster and I spent hours measuring and configuring tire size and back space.

If you go to the BF goodrich website it will give you the specs on how tall and how wide the tire will be. http://www.bfgoodrichtires.com/bfgapp/index.jsp

My rear tire I went with a 235 60 15 on a 7 inch rim. So my tire diamter is 26.1 inches and 9.5" wide on a 7 inch rim.

A 235 60 15 can only go on a 6.5" to 8.5" rim based on the mnf. specs.

Dont forget the heigth will change with the aspect ratio. A 235 70 15 will have a 28.1 inch diameter.