This may be a dumb question, but If I measured right tonight, my chain has stretched 1/4". It seems a lot. I have ridden about 3,000 miles approx. so far this year. I already have a new set of chainrings. I need to purchase a new cassette, or is it just cheaper to buy the individual rings on the cassette?
So, my question, is how much longer can I run the chain on my bike knowing that it will wear down the cassette and chainring more without causing additional damage?
Could it damage the derailleur pulley wheels if it is left on too long?