Brake pad wear can be an indicator of caliper condition. If the inboard pad is more worn than the outboard pad, the floating caliper may be seized. Either type of caliper fixed or floating will cause the brake pads to drag against the rotor when the pistons are seized into the caliper bores. In addition, the caliper boot should not show any signs of fluid leakage nor should the caliper boot appear hardened or cracked. The piston will eventually corrode and seize in place if a defective caliper boot allows moisture to accumulate between the caliper bore and piston. We recommend having your braking system inspected every 12,000km in order to ensure the safety of you and your passengers.