Hi,
I have some pretty bad saddle sores every time my ride is over 70km. I am a pretty aggressive position on a trek slr 9 and I have a Bontrager RSL 155mm saddle. I believe it’s the back of my tights that are rubbing and creating friction. Saddle height seems good it’s even a bit less than the 0.883 rule and everything feels also great on the bike. My sitbones were calculated by a machine in store and they were 130mm wide. Is the way to go it to go with a 140-145mm saddle width or a 155mm in a different shape? I have difficulty making a choice as saddles are pretty expensive.