Alloy wheel

Heavy steel wheels are relatively rare in showrooms these days -- it seems they are heading the way of bias-ply tires. Most new cars are delivered with cast aluminum wheels. While cast wheels weigh less than comparative steel wheels, they are still manufactured with thick castings and solid spokes ...

It's been well over a year since Michelin unveiled its take on the future of the tire, the airless Tweel. The odd-looking invention pairs a replaceable outer rubber layer with a central alloy hub joined by polyurethane ribs. Judging by this video, it would appear that the tire manufacturer is ...