Originally Posted by
motorthings
speaking as someone who has had many bb30 cranks, some have creaked and some have not. i have been able to fix them all with the suggestions above, but I have also found creaks elsewhere (as mentioned). when you have bb30 cranks, they are the "go to" culprit, but checking the other possible culprits can save you a lot of time and hassle. skewers were the problem two times, once they needed to be greased, and the other time they just needed to be thrown away.
Yup...and squeaking carbon seat post is very common. Best test with riding out of the saddle. Carbon bikes are like a speaker membrane. Sound really propagates and hard to determine where its coming from.