You need to re-think your tire widths - they appear to be too narrow. A general rule of thumb is that the width of the tire should be 10% wider than the wheel.
For an 8" wheel, this equates to 223.52MM, which means a 225 tire. I run a 235 and the geometry is perfect.
For a 9" wheel, this equates to a 251.46MM, which means a 255 tire. For the rear, I run a 10" rim and the numbers compute to 270.40MM. I run a 285 tire. Again, perfect wheel-to-tire geometry.