>>1616181I watched an oz cycling video that put me around between 150mm-155mm based off my sit bone width measured and my seated position (Sports). I have a ~140mm saddle right now and I start to notice it by about the 25-30m mark It's also very rounded so It's probaly an awkward position to begin with for my bones. I weight 90kg so I dont want to put my faith in carbon rails as I hear they can break with fatter people.