Tire Backspacing

[Unregistered]

Hi there i have a 73 ford bronco and i want to put 35 by 12.5 tires on it, and i was wondering what kind of backspacing if any do i need on my rims?

Thanks for the help

 

[OldieTwoShoes]

to be safe dont go higher than 3.75"

 

[TJK74]

3.5"

 

[Buckin'Fronco]

3.5" should be perfect. 3.75" and you could rub the coils or radius arm and 3.25" and you will rub the flares on compression

 

[brian72]

what if you are using '79 bronco knuckles...does that make a difference versus stock?