Originally Posted by
ridethecliche
First of all, you don't do a 25 mph course at 20 mph. That's a terrible speed for a 25mile tt, for a racer trying to do TT's anyway.
Second, 1.5-2 minutes over a 25 mile course is a HUGE savings when placings are determined by a few seconds.
If you're just goofing around on them, then yeah it won't matter, but if you're racing and the time actually counts, then they're a good thing to have...
My comments were put in the context of the OPs speed. He said he spends more time climbing at 10-15 mph than blasting along flats at 20+mph. He also said he doesn't notice any difference in speed with his current wheels.
My point is it's difficult to notice a speed increase from wheels unless you do tests. Aero wheels might give him 1/3 to 1/2 mph at 10-15 mph.
I have a pretty good idea what a good 40K tt is. I've got a tt bike, helmet, and suit and usually place well.