If pro rider rode tiagra instead of DA

[mustang1]

Suppose an TdF rider swapped the groupset of his pro bike from Dura ace mechanical to tiagra. What would he notice?

And please note, Im talking about a pro rider, not you.

 

[vickster]

Less gears

 

[DCLane]

They'd notice. It might not make much difference. But they'd notice.

 

[colly]

He would notice I expect. Would it make any difference ? Probably not.

 

[Mark Grant]

He or she would still be quicker than me on a top of the range Di2 equipped bike!

 

[screenman]

They would be 0.00763mph slower.

 

[jowwy]

Less gears

Why less gears????

 

[User33236]

Why less gears????

Tiagra is still 10 speed IIRC.

 

[Vapin' Joe]

Why less gears????

Tiagra 10 speed, DA 11.

 

[User33236]

If I can feel a difference between 105 and Ultegra then for sure a pro would notice Tiagra vs DA.

 

[Vapin' Joe]

Professionals spend so much time on their bikes and near or at maximum performance level that even the most minute changes become apparent. Things like 2psi above or below their preferred tyre pressure, for instance.

 

[Markymark]

I’ll let you know.

 

[jowwy]

Tiagra is still 10 speed IIRC.

I obviously dont look low enough down the food chain lol

 

[Ming the Merciless]

They'd know they were no longer second in line to being the team leader / GC contender.

 

[Drago]

A longer lever throw. If they've got large hands or long fingers they might ever prefer that.

Aside from that, and the obvious lack of a cog, I doubt it would make a single seconds difference.