Overall a well made rack and I am pleased with it. The aluminum poles are surprisingly rigid. Sliding parts fit snugly and are very sturdy (silicone spray and light filing of burred edges helped assembly). Rubber straps are thick, engage securely and appear to be of durable material. The 4 Torx screws holding the poles to pivot arms could be beefier (one was missing in my box - I found only 3).

Love the track. Only thing I would change is instead if the rubber straps to secure the tires utilize a more durable plastic clasp. The rubber holes tear or have on similar products.