70 Wheel question
I am looking for some help with my 70 Chevelle wheels. I currently have stock 70 ss wheels which are 14 inch. The current tires on the rear are 275/60/14 which I can not find more accept in bias ply. I would like to put 15 inch ss wheel vintiques on the car so I can put close to the same size radial tire in a 15 inch on it. My quetion is use a 7 inch rim or jump up to an 8 inch. If I use the 7 or the 8 what back spacing works the best. I am trying to not change the current look but also put as much tire on the ground as possible. I think the 15 inch tire in a 275/60/15 is about an inch difference in overall height. Basically, what is the best way to go? I am assuming I will change all the rims to 15 inch not just the rears. Any help would be appreciated! I have tried local tire/rim stores with no help.