Originally Posted by
pdlamb
Buying ceramic bearings for a bicycle is one of the most efficient means of getting rid of excess cash. Exceeded, perhaps, but contributing to a political campaign.
You'll never notice a change while riding, but you can become the blowhard at post-ride gatherings bragging about fractions of a watt savings because of your bearings!
+1
OP: send me $100 and I will say I installed ceramic bearings in your bike. You never notice the difference. And if you notice, it is placebo. So we both will be happy.
The alignment, size and roundness of the BB holes in the frame will determine how long the BB lasts, and how easy the bearings roll. So the frame manufacturer already determined 99.99999999% of what your BB can do. Pressing fancy bearings into an ovalized, and non-aligned hole will not make a difference.