When you look at the various elements on a bike that total to 100%, what percentage does each element contribute to the speed of a bike on paved flat surface? I just listed three broad areas. May need to expand and not summarize as much. I know when I was shopping for my bike, LBS said as you go up in price you are buying parts that would last longer and preform better. Also said lighter weight cause price increase.

When I was shopping for bottle cages, I found a $10 one that weighed 48 grams and a $17 one that weight on 38 grams. I can't see how that little bit of weight difference could make any revelant difference to an adult rider. That is just one example of trying to get an understanding of the value proposition of bike parts.

___% Tires
___% Parts quality
___% Frame weight
100% Total