Bontrager "Aerowing" TT tires?

Quoted message said:

I saw these Bontrager TT tires on a Trek time trial bike and they have
a little wing that blends between the sidewall and the rim. Any idea
what this might be for?

I couldn't find anything on bontrager's site:
http://www.bontrager.com/Road/Wheelworks/Index_Road_Tires.php

To keep the flow attached and smooth as it moves from tyre to rim.

Kinky Cowboy*

*Batteries not included
May contain traces of nuts
Your milage may vary

Kinky Cowboy said:

Quoted message said:

I saw these Bontrager TT tires on a Trek time trial bike and they have
a little wing that blends between the sidewall and the rim. Any idea
what this might be for?

I couldn't find anything on bontrager's site:
http://www.bontrager.com/Road/Wheelworks/Index_Road_Tires.php

To keep the flow attached and smooth as it moves from tyre to rim.

Kinky Cowboy*

Thanks.

I bought a pair and tool them out to pre-ride our TT course. Nice
tires!
- Seemed just a little tricky to get the "Aerowing" to seat on one of
my rims (the other seated automatically). I pumped to full pressure and
massaged the bead and aero wing into place with only a little work. So
I'm happy.
- Tire fit on rim seems neither too loose nor too tight; no tools
needed to mount.
- The aero wing seems to fill the gap pretty well
- 201 grams (200 claimed) for 19mm is light but not stupid light IMHO
- I like the all-black tread, no silly multi-color stripes

I'll see how my time is after the race!

Quoted message said:

I saw these Bontrager TT tires on a Trek time trial bike and they have
a little wing that blends between the sidewall and the rim. Any idea
what this might be for?

To smooth the airflow over the wheel.

JT

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