The point is riding less efficient, less expensive, more durable tires makes sense for training because it's your power output that matters, not your speed. What's a better group training ride, the one where you have to push a little harder or the one where you've equipped everything to make it easier for no reason?
Let's say a latex tube increases the Corsa Speed's Crr from 7.7 to 8.7W. Do you honestly think the 2x(10.2-8.7)=3W difference is going to be made up for by a 90g weight difference on a hill? You have no idea how physics works apparently.
According to Bike-Calculator, a 47kg rider with a 7kg bike at 170W will make it up a 5km and 8% grade climb in 24:34. The same rider +100g +3W makes it up in 24:13. A 21s savings. For someone so keen on optimizing your efficiency, you're doing it wrong.
All valid points sir. The Supersonics may feel faster than the Corsa Speed, but honestly I have never done a controlled test to compare the two. The Supersonics just seems to accelerate and jump at surges better, which really helps on the super steep sections. They also feel super aggressive and sticky in the corners, and road feel is like a sports car. The Corsa Speed feels more dead and squishy, but rolls over rough surfaces better without bouncing around... But maybe I should re-evaluate...
And I looked back at my post which kind of seemed rude/attacking
I just feel strongly about my tire choices, thats all. Im the type of guy who pays extra for the best possible performing tires and replace them often, even for my cars. All seasons are crap. I like to buy summer performance tires, and swap out to winter specific tires when needed. I don't care if Im just commuting or racing. Its way worth the extra cost to me as the tires make a massive difference in feel and performance. Same holds true on a bicycle... With the fairly good puncture protection and long life of the GP4000S, why get Gatorskins? They sacrifice EVERYTHING for pure puncture and wear protection. And they are surprisingly expensive locally at retail prices... Sure, they might protect better at things burying their way through the tire, or tiny little stickers might break at the inner liner. But If you get a pinch flat, nasty piece of glass, or nail, your getting a flat no matter what. I noticed its mostly down to luck, and not running over crap...
The only time I suggest Gatorskins is if your riding through a landfill (which is where they belong)