Hello everyone:

I am curious how often you all replace parts on your bikes assuming you use them every day.

I bought my Marin brand new 2 years ago. I'm guessing that I put about 1500km on it every year. I commute every day and do a few long tours during spring/summer. I live on Vancouver Island where there are a lot of hills and it rains a lot. I ride 75% paved roads/trails, 24% packed gravel trails, and 1% loose gravel roads. Here is the length of time that certain components have lasted for me:

Cassette: 1 Year
Chain: 1 Year
Brakes: 2 Years
Derailleur Hanger: 2 Years - I have had a couple of spills on my bike and I noticed that the hanger is very slightly bend inward. So I will be getting this re-aligned soon.
Derailleur: Have not replaced yet but I have considered replacing it when I do my cassette and chain.

How often do you find yourself replacing parts on your rides?

Cheers!