How long should a chainring last

curium Posts: 815
edited January 2013 in Workshop
I'm about to purchase my 3rd set of chainrings in 3 years.

They seem to last about 12months before the grooves between the teeth get seriously worn.

My current set has a bent tooth and is 12 months/3998 miles old.

How often do you have to change your chainrings?

This one is an FSA Road Pro 50t

2012-12-30 at 12-53-44 by curium, on Flickr


  • Bozman
    Bozman Posts: 2,518
    Up to 20K if you look after your drive train with good maintenance, plus swap your chain before that stretches and puts adverse wear on your chainrings and cassette.
  • desweller
    desweller Posts: 5,175
    Yonks. 10s of thousands of miles.

    Bent teeth aside, you should be aware that the teeth on new chainrings have different shapes to aid shifting. When they become pointy, uniform and shark-fin shaped then the chainring is worn out.
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  • Hoopdriver
    Hoopdriver Posts: 2,023
    Yes, they should last a long, long while. MAny, many thousands of miles. What kind of rings are you using that you go through one every year? And what kind of riding?
  • fast as fupp
    fast as fupp Posts: 2,277
    they last a lot loner if you keep them clean :D
    'dont forget lads, one evertonian is worth twenty kopites'
  • curium
    curium Posts: 815
    I think what I'll do is get a chain wear tool when I fit this new ring and try and stay on top of any issues with the chain with a view to replacing the chain before it starts to damage the rings.

    No idea how that tooth got bent though :?