Coloradoans who've ordered the tires on-line, swear by them.

Nancy Bibb of Pinecliff for example says her driveway is full of curves and is very steep, but the tires had no problem.

"I didn't skid any or ever lose traction-- they went through snow and clawed over the ice--they had a great grip," says Nancy.

You can see the tread of the Green Diamond tire sparkle in the afternoon sun. The diamonds in the rubber are man-made industrial diamonds. There are 1,000s of them in every tire.

The manufacturer says the tire is long life, low noise, and doesn't damage the road.

But most of all, the tire is touted as very good on black ice, packed snow and in the deep snow conditions.

"The traction is as you would expect from a studded tire with the advantage that you can run these year round," says Green Diamond president Rich Gostenik. "Actually the tire gets better traction as the tire ages."

That's because, as the treads wear, more and more of the diamonds are exposed.

Green Diamond also claims they can deliver the tire at a very competitive price.

"In the 16-inch tire size, you'll likely pay $140-$160 for a major manufacturer's snow tire. "The Green Diamond tire of the same size is about 20% less," says Gostenik.

The name-brand tire makers say there's something else buyers should know about Green Diamond tires.

The diamond tire is a re-manufactured tire.

"With a re-treaded tire you're not really going to know wear because you're not going to know how the tire was constructed," says a representative of a local Goodyear retailer.

"It could be a Goodyear, Dunlop, or Kelly Springfield tire or it could be someone else's tire."

But Green Diamond says their tires exceed all performance specifications and DOT standards.

"The old rubber from the major manufacturer is scuffed off and then it's re-built from bead to bead--in essence giving you new sidewall--new tread and new sidewall," Gostenik told 9News.

He says the tire will run for 40-45,000 miles.

Green Diamond is working on getting a local distributor, which they hope to announce in a matter of weeks.