↑ Nishimura, Kanehiro (2011) “Notes on Glide Treatment in Latin Orthography and Phonology: -iciō, servus, aiō”, in Historische Sprachforschung / Historical Linguistics, volume 124, page 193:
It is well known that Latin orthography tends to avoid gemination of ⟨i⟩ for two successive i̯-glides [...] The most classic case may be maior 'larger'; its phonological representation is /mai̯i̯or/[...] the provision of a macron (i.e., māior, as if the vowel were long) in order to display the syllable weight — the way common in a number of grammar books and dictionaries — is utterly misleading in that it disguises the phonological reality.