GoodLife03 February 18, 2014 08:36 PM Had this idea 5 years ago. Question is do they have a working product, or just a video? Lucas1325 February 19, 2014 01:05 AM I hope these are released soon. I know I would buy a set. Imagine the decrease in accidents! Maybe they could work on some sort of self deployment system. Slowburn February 19, 2014 04:43 AM The cost has got to outweigh the usefulness. Bob Stuart February 19, 2014 06:49 AM Do they have a proposed mechanism, or is the missing link still called magic? Carbide studs don't wear down badly, they just reduce traction on pavement. They are not rough-riding or particularly noisy. owlbeyou February 19, 2014 08:31 AM From the inventor of the world's first winter tire?....That's quite a lofty claim.The logistics of making retractable studs on a tire using a dashboard button is practically incredible. What happens as the tires wear? Good for only one season? Slowburn asks a good question---is the tire cost prohibitive? Besides, studded tires are not as useful in snow. For the few moments that conditions are icy may not be enough to warrant the purchase. Mel Tisdale February 19, 2014 11:03 AM I imagine that the studs are raised pneumatically and as such would be loosely based on the sort of system that some vehicles use to alter tyre pressure from the driver's seat. If fitted as O.E. then the costs would not be prohibitive considering the top of the range vehicles that would have such systems offered, provided that there is sufficient market for them, which there possibly is. Hitting ice, especially black ice, can be fatal and some will pay whatever it takes to avoid such an outcome.There are ways that a modern, fully equipped (including the latest GPS chips with inbuilt accelerometers), passenger car could even have the raising of the studs automated. But, it might be more of a sales gimmick than anything else (especially seeing as the car would need to begin to skid in order to trigger the mechanism, which might then take too long to operate). Though, that said, there have been times when black ice has caught me out and studded tyres of any kind would have been very welcome. I can, however, confirm that hitting black ice is an excellent cure for constipation. Anonymous756 February 19, 2014 01:14 PM I have a set of Nokian Hakkasomethingorother studded tires on my Mercedes E350 4Matic (AWD) - nearly $2k worth. The studs are pretty low profile and the added road noise is minimal, don't even notice. The downside is that the studs are pretty low profile and they can be foiled by a layer of puffy snow over the ice (rare, but it happens).When conditions match the tires, it's an unbeatable combination. It can be entertaining to blow off SUVs from the lights when roads are greasy. Ron Olson February 19, 2014 01:41 PM This type of tire would really be useful in the state I live in. The increase in safety would translate into better control on icy roads thus decreasing traffic accidents. Living in Michigan we've had our share this winter and many could have been avoided with studded tires. Michigan outlawed them in the late `70's so I don't know how legal these would be. Sharon Franz February 19, 2014 01:46 PM QTires had this idea years ago... http://auto.howstuffworks.com/q-tire.htm Last I heard they were out of business -- hit the market at the wrong time economically, plus had manufacturing issues in China. David Best February 19, 2014 01:47 PM That's funny... I was just thinking about something like this yesterday. It was a lower-tech solution. I guess my hopes of a patent are out the window... not that I thought this sort of thing was a novel idea. One challenge for such a system would be additional unsprung weight, which makes it more difficult to actually keep the tread/studs in contact with the road.