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.
If I remember rightly, a grapheme is one written symbol (i.e. a letter), a phoneme is one sound of a language that all native speakers of that language would agree on to be the same (i.e. 'p' or 'b' we can recognise as different sounds & we recognise 'pin' and 'bin' as completely different words).honeme-a phenome is the smallest sound that distinguishes one word from a similar word i.e the d in bid.. as opposed to the t in bit.. the d and t being the phenomes... digraph -  a pair of letters that represent a single speech sound like ng in ring... or ch in child...