• The BB (shimano UN300) on my commuter / tourer has worn out after 6 months, is this normal? It gets ridden about 25-40 miles a week, with an occasional longer trip, so not much more than 1000 miles in total. I do have to keep it outside and it's pretty exposed to the elements when locked up at work.

  • Unfortunately that doesn't seem to be an uncommon life for bbs of this kind stored in those circumstances.

    I've made mine last longer by keeping the bike covered with a groundsheet when outside, held in place with market trader clips.

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