Do tire studs ruin roads or fly out?
Extensive testing by highway departments throughout the world have concluded that modern winter tires and tire studs do much less damage to roads than the studs used 40 years ago. The use of radial tires, better road compounds and lighter weight studs have all contributed to significantly reduce road wear and rutting.
A properly installed tire stud has little chance of coming out of the tire during driving. The rubber of the tire compresses very strongly around the base flange of the stud and the rotational speed of the tire is not strong enough to dislodge the stud.