NOISE FROM BOTTOM BRACKET
I had mounted the Big Apple tyres on the original rims and changed the shifter cable set and pedals. The pedals are a bit wider then the originals and had scraped the ground a few times,. Overall the mods.have improved the ride comfort, however, in last 2 days I hear a noise coming from the bottom bracket as I push the pedals can feel a bit of vibration. This noise is a bit concerning as it' s seems am riding a cheap supermarket bike. Also, the mechanic told me the chain is quite stretched and if I want would need to replace chain and a new cassette.
Any thought on the noise from the bottom bracket? Is it too old as well?