So my riding buddy can never keep up with me downhill.
I'm slightly heavier than him (5-10lbs).
I have an older non aero bike. He has a newer aero bike. His is probably a few lbs lighter than mine.
I have a better aero position than he does.
But I don't just go a little faster than him, I smoke him!
My suspicion is wheels.
Can lower end wheels be the cause? Anything else?