Originally Posted by
Tom Bombadil
I'd love to see them offer a 12-30T. I'd swap out my 12-27 for one, if my 105 RD can handle it.
FWIW, the Tiagra 12-30 cassette works perfectly with my 2011 Ultegra 6700 RD. It would be temping to try the 12-32.
Looks like Shimano was feeling the heat from SRAM's wide range Apex and Rival options. BTW, I read somewhere that SRAM will be offering mid cage RDs and wider range cassettes in the Force and Red levels for 2013 also.