Originally Posted by
darksiderising
This topic has been covered many times and you are bound to get more unhelpful responses than helpful ones, so use the search function.
That said, if you want a big change, go multiple teeth smaller. If you want just a little change, go one tooth.
Yeah bad advice including yours. +/- 1t change is a fairly big difference already at 42. Some people know exactly what they want and can handle a larger difference. Irresponsible to recommend a bigger change.
And also to the guy that runs 49x13, good luck to your knees. Learn how to ride a bike.