All other tires and tire extrusions are made from recycled vinyl.
Vinyl tires will not leave black marks on patio floors like black rubber tires.
The tire size is determined by measuring the diameter of the rim.
Tires are made slightly smaller than the radius of the rim.
They are heated and stretched over the rim.
They will be slightly smaller.
The tire is heated and stretched over the rim and into a grooved rim.