Tires: tires, cadillac srx, rim widths

Question
I own a Cadillac SRX 2006 with AWD. my question is do you have to stagger the tire size from front to back, or can all 4 tires be the same size?

Answer
Bill,

When vehicle manufacturers use staggered tire sizes, they also adjust the springs, sway bars, and shocks to accommodate the change.  They usually also change the rim widths, but that is not true in your case.

So I would say that there may be some handling issues if you were to use the same size all around, but I just do not have enough information to be sure.