53/15 is pretty stiff! I ran 52/19 for a while which was fine, but then the cold weather hit so I changed to 42/16 again. Not much difference in GI but enough for the old knees I think and I spend a bit less time out the saddle taking off from the lights. Might change back in Spring when its warmer.
53/15 is pretty stiff! I ran 52/19 for a while which was fine, but then the cold weather hit so I changed to 42/16 again. Not much difference in GI but enough for the old knees I think and I spend a bit less time out the saddle taking off from the lights. Might change back in Spring when its warmer.