A variety of tyres (usually winter tyres) that are not equipped with studs, but have slots for their installation. The meaning of this decision is that, firstly, such tyres are typically cheaper than similar models with pre-installed factory studding, and secondly, the owner is given certain freedom of choice — to stud or not to stud the tyre. In fact, it should be noticed that tyres created
for a stud are initially designed for operation with studs, respectively, without them, they will behave worse than ordinary non-studded ones. In addition, studs made after purchase take hold much worse than factory ones — with more or less intensive use, studs tend to fall out, especially if the tyre does not stud right away, but after some run.
Winter tyres (see “Season”), supplemented with studs — metal pins built into the tread. Studs improve traction on ice and packed snow: “biting” into such a surface, they do not allow the tyre to slide. On the other hand, on hard surfaces and in loose snow,
studded tyres are noticeably inferior in efficiency to a
non-studded ones.
