Wife does not drive much. Recently rotated the tires probably the shop over tighten the lugs! I need to loosen them.Probably not uncommon if you do a lot of city driving which I'm assuming is how you have so few miles on a '12. We're at 65k miles and rotors have no vibration whatsoever. Pads are still well over 50% too.
Also if your wheel lugs are over or unevenly torqued it can cause the discs to warp easily.
I had warped front rotors on my 07 MDX when I bought it used, replaced them and the vibration problem went away, I went ahead and replaced the pads as well. I dont know where the rotors came from but replaced rotors+pads with OEM to be safe, no problems at 15k after the swap and it is my daily driver I use in rush hour highway traffic every day.My 2012 X, not quite at 20K, sometimes the steering wheel shudders when braking above 60 miles. To me this is front rotors issue. Is this normal at 20K miles to have rotors problem? I never had rotors problem at such a low mileage!