I have a 2002 GMC Yukon 1500XL. The right rear brake caliper went bad because of a torn rubber boot, which caused the brake pads on that wheel to wear out really quickly. I replaced the caliper, rotor and pads on that wheel. The left rear wheel is still in good shape, with a good caliper, a good rotor with plenty of thickness and 9/32" of brake pad lining on both inner and outer brake pads.
I don't understand why I would need to replace the pads (and rotor) on left rear wheel just because I replaced the pads on the right rear?
I want to leave the left rear as is just in case that caliper were to go bad 10k miles from now.