I've got the itch to get another bike and noticed that a few of my choices(Cannondale CAADX & Diamondback Steilacoom RCX) come with a BB30. I tried doing a search in the clydesdale forum and did not come up with anything. The results from the rest of the forums seem to be mixed. Some reviews indicate that the BB30 will develop a creaking sound. Am I worrying too much?
Bb30 has a larger spindle then standard 24mm to stiffer in the crank is better. Most frames are laid up with more carbon or alum around the bb30 bearings in the frame. Win win if you ask me. I know I felt the difference in off the saddle performance when I switched.
I have a BB30 Felt F4 and no probs so far. I honestly don't like the concept so much with the press fit bearings. I have Dura Ace cranks with the Wheels adapters fitted. Being a clyde, things wear out much quicker and so should be the case for BB30 and the creaking that develops as the bearing/frame interface develops some play. Praxxis makes a really good BB30 adapter for the Shimano size cranks and it's a fit mechanism that lends itself to a tight fit in the frame.
As a side note, I see all this stiffness increase claims with carbon cranks and big ouboard bearings and press fit bearings comical. I ride track where stiffness is king, and carbon cranks are rarely seen and regarded as flexy, and certainly not used by big sprinters (at least nothing for the regular folk). And with all the bottom bracket developments, the best track frames in the world still use in board scew in style bearings.