Silent / quiet luggage, trolley, on wheels [closed]

This looks like what you're looking for: g-ro.

g-ro wheels

Rolls easier: G-RO glides easily over many types of surfaces—cobblestones, curbs, steps, gravel, snow, sand.

I selected luggage on a slightly different but related criterion: I wanted a suitcase with wheels that survive the real world. Most suitcase wheels appear to be designed for airport lounges only, presumably on the assumption that you'd use a car or taxi to get to the airport and not walk your suitcase for 20 minutes on the street of Brussels.

Based on reading online reviews, I bought an Eagle Creek suitcase. The wheels are roller blade wheels and it rolls easily on any surface. Now, it's not perfectly silent on cobblestone, as I think nothing would be, but it's certainly better than your typical Samsonite or Antler.

Photo from Amazon.

In theory there's no problem in manufacturing such luggage.

Physics tells that the required size of the wheels depend on how far below average quality sidewalks is supposed to be handled. Based on my guess they wouldn't neccessarily have to be extremely larger, 1.5-2 times the wheels typicaly seen on luggage, would probably go a long way.

But you'll probably also need the wheels mounted in a way that gives other parts of the luggage good ground clearance (unlike the one Berwyn shows in his answer), but then you also need some mechanism to move the wheels to a more retracted position so the luggage doesn't take up so much space when stored/stowed.

I've never seen such luggage, and I doubt many people would be interested in giving up that much space inside the luggage to fit larger wheels outside, so if it exists, it might be quite hard to find.