[sfscott]

I run 170s on road bikes.

My MTB has 175, which was kind of the default size available. I am having a lot of issues with pedal strikes, particularly on abrupt inclines after declines (rollers.)

I have added a fair bit of air to my rear shock, which should lift the BB up some, and a tech at the LBS suggested riding with the rear shock in "trail" setting.

Wondering if a move to 170s would help the pedal strikes--and what I reallywould be losing in leverage.