Exactly. Small bolt pattern is 5x4", and uses 10x1.75" brakes. Big bolt pattern is 5x4.5", and uses 10x2.5" brakes.
If your backing plate measures 11" in diameter, then you have 10" brakes. And if the offset it 1 1/4", then you have small bolt pattern, 10 x 1.75" brakes.
