Originally Posted by Jipe

Its because like me, you changed the tires from 40mm wide to 50mm wide (Keuzotter gives also 2.21 for 52x32 with 40mm tires) and for this reason, I moved to a 50t chainring.

With the original 9-32 cassette and 42t chainring you can have 6.7-187, not so far from what is obtained with a double chainring.