I dug deep and it appears that the Rodi Blackrock, 6-bolt, sealed bearings, ERTO 622 x 23, Hub formula DC32 9 X 100 QR is an ideal wheel for my heavy Gepida ebike. The rim is slightly wider than the stock 19C, but my Schwalbe 40mm tires, 28 X 1.5 will fit just fine and the slightly wider rim...