Question about Leifheit Side-Car

Rollers are hard, Seidcar made of sheet metal = loud noises on slab floors (depending on condition), OK on carpet.
I have floors with tiles, despite the rolling noise, the Sidecar is ideal for me, light, handy, easy to clean and good for storing when not in use.

I can confirm Benny47's answer. I use the Side-Car as a shelf for a scanner, so it is rarely moved. It rolls so easily that the only weak point I miss is a locking mechanism...