yes when turning on snow that same day, there was no squeak, However there were not enough places to test this due to the warm weather. On the gravel parking lot, there is too much noise to hear if anything is squeaking.

It still has me wondering if its the rim flexing, or something else.

I have had tight sure grips cause wheel squeal, or chirping, and even had a few really snug ones result in vibration, but this is not the same sort of sound, and no noticeable vibration.

This is like a metal to metal sort of squeaking. Really light sound, and changes with wheel rotation speed.