Could this be the new braking vibration?

I just noticed that when braking on a very smooth road, I feel a rapid vibration, I think in the brake pedal.

Been a couple of years since I replaced pads. Never touched nor measured rotors... And never worried about runout.

Time to break out the shiny new toys my kids got me! Micrometer and magnetic base+nice dial indicator.

A) I need a base with a longer arm and stronger magnet. Mounting is a pain!

B) Here is what I found:

* Front rotors are at 23.1 mm (min 22)
* Rear rotors are at 7.8 mm (min 7.5)
* Runout is approx 0.1 mm (max 0.05) on all four wheels... Within a few hundredths.

What I see on runout is two high spots about a third to halfway around the rotor, the the rest is mostly low (ie high at 0 to -0.01 mm, rest -0.07 to -0.10)

My questions:

* could runout like that cause the vibration?
* would you just replace rotors?
* since I never measured this when pulling/replacing rotors in the past (and didn't have vibration issues),is it possible this is a new issue, or would it have shown up long ago?

And finally, just had a (dumb?) thought: If the caliper pins are not sliding properly, would that, combine with runout,cause vibration (maybe the whole thing fixable by greasing pins and trying the five-position runout test LOL?)