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.
A grapheme is the smallest unit used in describing the writing system of any given language, originally coined by analogy with the phoneme of spoken languages.A grapheme may or may not carry meaning by itself, and may or may not correspond to a single phoneme.Graphemes include alphabetic letters, typographic ligatures, Chinese characters, numerical digits, punctuation marks, and other individual symbols of any of the world's writing systems. grapheme may or may not carry meaning by itself, and may or may not correspond to a single phoneme.