I have looked for a little while and can't find a general answer. I feel like my pads need to be replaced. I purchased the truck at 60,000 and currently it has 102,000. Prior to I don't know if the pads were changed. Just feels like the brakes are not what they used to be. After the Bilsteins and 34's obviously that puts a strain, but that was 20,000 miles ago. I pulled my front right wheel off to check what was remaining on the pad. I can see roughly 1/4" on the middle groove on the outboard pad and a little less on the inner. Total thickness I did not measure. Also checked the rear, outside pad through the rim and that was roughly 1/2" total. What do you guys and gals think?