Cannot get a straight answer

[Dylant46]

I have a 78 Malibu with no fender rolling or anything done. Can I fit a 275 tire on a 15x8 wheel with 3.5 or 4.5 backspacing? If so which backspacing

 

[t5montecarlo]

There are some discussions on tire size. Here is one:

wheels and tires

does any one know if 295/50r15 tires will fit a 79 malibu? if so what backspacing do i need. or what size tire will fit need widest i can go. I HAVE STOCK SUSPENSION AND REAR END.

maliburacing.com