Depends upon the way you drive on them. When properly inflated and rotated the last user is correct 75,000 to 100,000 miles on average, even on the cheapest set of tires.
Definition of morpheme. : a distinctive collocation of phonemes (as the free form pin or the bound form -s of pins) having no smaller meaningful parts.
The Difference Between Morpheme and Morph The basic unit of grammatical meaning is the morpheme. . . . The unit of grammatical form which realizes a morpheme is called a morph. Generally speaking, the difference between the unit of meaning and the unit of form is theoretical and academic, as in most cases a morpheme is realized by only one morph.