I leave them at my workshop. I also had half the garage full of wheel racks for three cars for a long time, now they are stored for €20 per season and set at Reifen-Jupp around the corner. The space gain is worth it to me, and mounting wheels was never my favorite activity. Otherwise, the wheel racks were a good thing. I had additionally screwed the things onto a 19-inch MDF board each with wheels underneath, so you could easily move them. However, from a tire width of 265mm, the selection becomes very limited.