The concern I have with flat metal strips (if they aren't thick enough) is that they could oscillate/vibrate and contact the tires as the air flows over the support. The shelving brackets seems to be working perfectly as the "U" channel simulates the thickness of a thicker strip without the mass/bulk/cost of one. The 35" strips I bought yesterday was about $3 each. I'll probably pick up a pair of 48" strips (be it the shelf bracket rails or the punched hole strips) fer the lower panel support so I can git rid of the wire support.
