https://www.continental-tires.com/car/contiflexstud
Quote
...The ContiFlexStudâ„¢ is a brand-new design. It delivers dramatically reduced road wear, [7% better] grip on ice, longer-lasting performance over lifetime and less interior stud noise. ....The radical new design of the ContiFlexStudâ„¢ provides yet another benefit, which is superior wear performance matching the full lifetime of the tire. The stud's rubber body wears down along with the tire's tread. This allows the stud to maintain the pin's effectiveness ...
Quote
...The ContiFlexStudâ„¢ is a brand-new design. It delivers dramatically reduced road wear, [7% better] grip on ice, longer-lasting performance over lifetime and less interior stud noise. ....The radical new design of the ContiFlexStudâ„¢ provides yet another benefit, which is superior wear performance matching the full lifetime of the tire. The stud's rubber body wears down along with the tire's tread. This allows the stud to maintain the pin's effectiveness ...