None of my luggage squeaks, either. It's just my knees.
If noticed, I just wink: Creak-creak-creak " It's the luggage " creak-creak.

I also avoid running to any gate: Even walking fast, one runs over the two-wheelers plodding along, pacing themselves. Poor sods.

Kiwi: I have a perfect opportunity for both of us. I'll sell you my old two wheelers ( at a better than going rate in Auckland ), thus allowing me to update to even faster 4-Rollern cases.

+ Free local pick-up, Le Canton de Neuchâtel.