Im in need of a chain and sprockets. So should I go 520 or 530?

I commute in all weathers everyday. But I do have a Scott oiler just fitted and I got over 30,000ks out of my last set which are still going strong on my old bike. I run 15/41 and am very happy with it.

 

I went through this Dilema and in the end settled for the 530.

Mainly because I have snapped a chain once before and feel safer with the 530 although the weight saving with the 520 was attractive.

I currently have a new chain, sprockets and Cush rubbers waiting to be fitted but the current set with 28k is still o.k for now.

 

Ran a 520 14/43 for years. Went stock on next change. When this wears out it will be 520 16/43. Had zero problems with 520 except for the 8 lbs of weight loss. I commute hour each way.

 

What the others said. For commuting and generally less worry, I run 530. I only marginally care for my chain and it just wasn't something I feel necessary to try to cut back on. A lighter flywheel or rims will make a bigger difference. But if taken care of, a 520 will last a decent amount of time time and rotational weight does make a difference. Make sure to get steel sprockets, though, or a hybrid like a supersprox rear ring.