3.5 or 4.5 Backspacing?????

[88stangmangt]

Weld makes two types of the same 15x8 rim except on is 3.5 inch and the other is 4.5 inch of backspacing which is the best? does it matter? any rubbing/ clearing issue's? (just bought my 15x4's today) i am gonna go with a goodyear G-Force tires for the back any help would be great

THANK YOU!!!!!!!!!!!!!!!

 

[GTPhreak]

i think most people get 5.5" back space on their 15x8 welds

 

[89MustangGX]

i think most people get 5.5" back space on their 15x8 welds

Some get 4.5", but the 5.5" really fit better.