I bought go treads a few years ago. While they don’t break when used as leveling blocks, they do get damaged by heavier vehicles. The plastic deforms where the curved ribs cross when they are folded. I reported this to them and sent photos.
A couple of months later they started selling them for the same price with a rubber sheet intermediate layer to help prevent that damage, i contacted their customer service department asking if they would send me a set free of charge since i had reported the issue. They wanted me to pay $60 for the rubber sheets. I declined, thinking they ought to send the corrective action to me for free. I don’t know how effective the added rubber sheets are at preventing this damage, but I suspect they are effective. I carry other blocks for leveling.