Tire size that won't rub

[WoodenNickle]

I have some 14x7 wheels with 4 inch backspace.
I have a 72 Swinger
What are the widest and tallest tires I could fit in the back without rubbing.
Same for the front, I don't want any chewed up tires. The front will likely be smaller I know, but I want to know the biggest so I can go lower.

Thanks for the helprayer:

 

[roccodart440]

On the rear 26-27" depending on stance.

 

[emnestor]

On the rear with That rim a 60-255 is about as big as you can get

 

[rob_robinson87]

What is your spacing on your wheels? I don't see a link or picture, are these factory steel wheels or aftermarket?

 

[duster2]

Off the top of my head , 245-60-14 is the biggest , widest 14 inch tire you are gonna find .........

Frank

 

[mnghouse]

I'm running 245/45R18's on rear and 215/40R17s on front with a 9in back spacing on my 71Swinger