I have fulcrum racing quattro road bike wheels. I'm changing my bearings quite often since I noticed that in general they last around 5000 km (over winter). I'm usualy using SKF 61903 bearings from local dealer, i even used NTN bearings they both lasted around the same.
I noticed that bearing of the drive side of the rear wheel gets worn out much quicker than on a non drive side. I'm wondering is this due to higher forces from chain or there is a humidity and rust problems.
What parameters of the bearings should I consider when buying new bicycle bearings? Don't just say buy ceramic bearings. I'm sure that helps them not to get rusted that much since only bearing race can get rusty but still..:D
I noticed there is multiple choices when it comes to bearings. I know there are ceramic bearings, ABEC 1-X and also double lipped bearings,.... anyone with some more experiences?
What parameters are you looking for when buying new bearings for bicycle wheels?