I prefer this gear calculator to the one above:
http://ritzelrechner.de/
the current options under discussion:
http://ritzelrechner.de/?GR=DERS&KB=36,52&RZ=11,12,13,14,15,17,19,21,23,25,28&UF=2135&TF=90&SL=2.6&UN=KMH&DV=teeth&GR2=DERS&KB2=36,52&RZ2=11,12,13,14,16,18,20,22,25,28,32&UF2=2135
<edit: that gets cut off. Quote my post and it should bring up the full string to copy and paste>
11-28 is a good allrounder, provided it can comfortably get you up the biggest hill you'll face.
11-32 will give you one more lower gear (14% slower than the 28), with the same top end.
The downside to the wider range is different jumps between gears in the middle of the cassette. Not a dramatic issue with 11 speed though, but you do lose the 15T sprocket.
NOTE:
THe RD-R8000-SS (short cage) is officially only rated to 30T max on the cassette.
The RD-R8000-GS (medium cage) is rated to 34T max.
Shimano do tend to be conservative though.
http://ritzelrechner.de/
the current options under discussion:
http://ritzelrechner.de/?GR=DERS&KB=36,52&RZ=11,12,13,14,15,17,19,21,23,25,28&UF=2135&TF=90&SL=2.6&UN=KMH&DV=teeth&GR2=DERS&KB2=36,52&RZ2=11,12,13,14,16,18,20,22,25,28,32&UF2=2135
<edit: that gets cut off. Quote my post and it should bring up the full string to copy and paste>
11-28 is a good allrounder, provided it can comfortably get you up the biggest hill you'll face.
11-32 will give you one more lower gear (14% slower than the 28), with the same top end.
The downside to the wider range is different jumps between gears in the middle of the cassette. Not a dramatic issue with 11 speed though, but you do lose the 15T sprocket.
NOTE:
THe RD-R8000-SS (short cage) is officially only rated to 30T max on the cassette.
The RD-R8000-GS (medium cage) is rated to 34T max.
Shimano do tend to be conservative though.