This thread makes me feel like I belong in the PCL...

I'm 5'5" and 145lbs...

I really haven't had too much trouble on downhills vs. some bigger members of my cycling group. Granted, downhills here are just the backside of a bridge, maybe 1/8 mile long at best. Fastest I've hit on one of these "downhills" was 44.2mph and that was while tucked and pedaling.

It probably helps that I'm a little more flexible than most of the guys I ride with, and can tuck a little bit smaller I guess.