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technical illusion

Warning: The following is a rant. But a seriously intentioned.

bring What other wheels? What brings a lighter road bike? What other tires?

A lighter road bike!
general answer to these and similar questions: nothing. Yes, just nothing. Thanks to a racing bike weighs just one kilogram runs a 70 kg man is about 40 seconds faster a fairly steep slope at 1000 meters high. But he will need about one hour. So it was just 1.1% savings. And on a track that you got a few minutes faster, go for a few minutes slower. A full, hard-won kilograms and a mere 1.1%. For heavier riders or less. Who in Mountain time trial in the pros or serious amateurs mitfährt for the win, going to see of course different. But these are only a few people.

aerodynamic wheels!
Sure, aero is always good. Finally brings the most, because the main resistance happens to the air resistance. But this is really? How much aero wheels actually bring?

According to the test on Roues artisanales are the best front wheels twice as aerodynamic as the worst. Wow! And why do I write because that can get nothing (in the sense of not much or not enough)? was

1. In comparing the very worst: For the following reasons The Mavic R-Sys, with the very best, compared to the Zipp 808. No one is seriously one against the others want to play. Handelüblichere front wheels, and affordable, as Aksium Mavic, Fulcrum Racing 5 Shimano WH-R560 lie somewhere in the middle.
2. The absolute difference is small. At 50 km / h, for the time trial to make no special equipment at an average height and weight and seating position w has more than 550, the Zipp 808 saves over the R-Sys, only 18 w. The difference of Zipp 808 for Shimano WH-R560 is only 9 w. The rear wheel does indeed add more, but generally it is believed that this gain is lower, because there the air clean in any case not more important.
3. If we take the 9 w (808 vs.. R560) and proposes a penalty of 6 w's for the rear wheel, then the difference is a proud 50 km / h down to 15 w / 550 w = 3%. The first sounds like a lot, but according to Analytic Cycling 15 additional watts shown at 50 km / h only 0.5 km / h.
   And that is one of x thousand euros?

Here: deciding time trial specialist, where seconds or fractions for victory or defeat, will come to a different conclusion.

Lighter tires!
same again the same song: the differences are too small and when commercially available from a good tire (Conti GP4000S, Veloflex Black and similar) proceeds, then about rolling resistance and cornering grip is to gain very little (I'll spare us the bill at this point), but the frequency will increase margins by "faster" tire.

is of course in racing the puncture play a minor role, but even the racer benefited little from super-fast tire, but maybe from weak puncture, respectively. the consequences of slowed down.

offer of reconciliation
A light bike is fun, high-profile wheels look good and light tires, style Veloflex Record with latex tubes, feel great about the trip. It is a pleasure to such things and have to drive too. Rational needs the to be unfounded.