80GI is too high for commuting IMO
high 60s is more normal
'normal' means nothing. On the flats of manchester I run 77.4 and can keep that at a decent RPM for 10+ miles easy, which is my commute one way and accelerate and skid with not much trouble. I do use 170mm cranks.
'normal' means nothing. On the flats of manchester I run 77.4 and can keep that at a decent RPM for 10+ miles easy, which is my commute one way and accelerate and skid with not much trouble. I do use 170mm cranks.