Scraping sound while turning?

crazyone64

5 Year Member
May 2, 2018
100
7
28
Toronto Canada
Hi,
I noticed when taking left turns, that there is a quick repeating scraping/grinding sound coming from what i suspect is the rear passenger wheel well. It's not a constant scraping sound, it stops, starts, stop starts, only when the vehicle is in motion taking a left turn. (no braking applied)

observations on rear passenger side:
  • tire does not move when pushing at 12 oclock and 6 oclock, and 3 and 9.
  • rotor shield is not in contact
  • brake pads have an uneven wear.
  • On the caliper bracket, one 'hole' for the slider pin, seems tigher than the other. Both pins go in smoothly on 1 hole, but the other, both pins are tighter to push in. I cleaned it out and applied brake cleaner, shiny inside, used new caliper grease, no difference, it's tight going into the hole.
  • New slider pin rubber boots are being used, no cracks or damage.
  • Since it's single piston, i suspect the slider pin being tight is causing the uneven brake pad wear

Any ideas what to test or do next?
Thanks in advance,

Video of caliper bracket:
20240813_115745.jpg
1000006099.jpg
 
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