Wikipedia:IPA for English tells me…
^ Many speakers, for example in most of Canada, have a different vowel in price and ride. Generally, an [aɪ] is used at the ends of words and before voiced sounds, as in ride, file, fine, pie, while an [ʌɪ] is used before voiceless sounds, as in price and write. Because /t/ and /d/ are often conflated in the middle of words in these dialects, derivatives of these words, such as rider and writer, may be distinguished only by their vowel: [ˈɹʷaɪɾəɹ], [ˈɹʷʌɪɾəɹ]. However, even though the value of /aɪ/ is not predictable in some words, such as spider [ˈspʌɪɾəɹ],[citation needed] dictionaries do not generally record it, so it has not been allocated a separate transcription here.
Well there you go, I had not noticed that. Do you hear this, Dave?
