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.