Are you better sitting them with a wheel on the ground so the hook isn’t taking all of the weight on the rim of the wheel?
That’s what I’ve done with a few of my heavier bikes. Need to be really careful to ensure that the wheeel is JUST touching the floor though, otherwise they do flap about a lot more. In terms of weight on the wheel – if the wheel is strong enough to support your weight landing on it from height at speed, it will be strong enough to support the weight of the bike 🙂
If you have a number of bikes is there not a danger of them all flapping about and crashing into each other
Yes – need to be careful to space the hooks out correctly and get them at the right height so that the handlebars don’t all overlap
If you have plasterboard walls, you can get a length of chipboard from B&Q, then fasten that to the beams of the house, then fasten the hooks to the chipboard. It’s surprisingly strong