I just bought a cheap new roadbike, a Merida Ride 94.
It's equipped with Shimano 105 Triple shifters, front & rear dérailleur. A KMC x10 chain, Tiagra CS-4600-10 12-28 sprocket and an R563 triple crankset.
All this is factory mounted.
The bike rolls good enough for me but I do have one problem:
Problem: Poor shifting from the rear dérailleur and a noisy (rattling) drive train.
Could this be caused by the Tiagra sprocket? Or is it because the parts are new and needed to get 'used' to each other?
Because I checked cables, chain and correct setup of the dérailleur I'm also thinking about the dérailleur hanger might be out of center.