crank length for new bike

[Triskeliongirl]

Hi, I'm a fella putting together a new bike for my g/f. Frame is a Jamis Ventura 48cm. Shoe size ~38/40. 165 mm are what comes with the bike stock, I would like to try 170s but unsure about wheel/foot clearance. Any one have 170s on their Jamis or similar sized frame? Thx.

I think 165 is appropriate for that frame size. I ride a similar frame size and use 165s. I tried 170s and they gave me terrible knee pain. I am 5'4" tall.