Hi Slowtwitch,
My new TT bike will have zipp 858 front and back and Super 9 (for race day) in tubeless config. I’ve only ever used 25mm tires, but from the Zipp product page, I’m interested in 28mm tires, but have some concerns.
Who uses zipp super 9 and/or 858 with 28mm tires? I heard that they still have the old narrow inner rims, and that while zipp says 28mm is fine, theoretically you’d be losing watts? I’m wondering if this is true in real world race situations?
The internal is 18mm and outer is 24.6mm. So, 28mm Conti GP 5000 seems way bigger.
Is this actually aero or bad?
Really looking to see what your experiences are,
Thanks
My new TT bike will have zipp 858 front and back and Super 9 (for race day) in tubeless config. I’ve only ever used 25mm tires, but from the Zipp product page, I’m interested in 28mm tires, but have some concerns.
Who uses zipp super 9 and/or 858 with 28mm tires? I heard that they still have the old narrow inner rims, and that while zipp says 28mm is fine, theoretically you’d be losing watts? I’m wondering if this is true in real world race situations?
The internal is 18mm and outer is 24.6mm. So, 28mm Conti GP 5000 seems way bigger.
Is this actually aero or bad?
Really looking to see what your experiences are,
Thanks