I have both user and shop manual for my 2010 fat boy low FLSTFB ... and neither one has front tire pressure noted. My bike also does not have a a plaque nor sticker noting tire pressure. Would appreciate page number/section where you read solo pressure etc. My manuals make no mention of solo or w/ passenger. Maybe I crossed over into a parallel universe..

In any event...I'm going w/ my manual's (printed on the dark side of the moon) recommendation of 42 in the rear ...and another posters recommendation of 38 on the front based on my *** feeling better at 38 vs 40 in the front.

End of story from my bizzare universe....