![]() ![]() Aero Testing Tires + Wheels - Vittoria Corsa Speed.Aero Data: Vittoria Corsa Speed, Contintental GP T.Silca Tubeless 80mm Valve Stem (good for deeper wheels) Stans 44mm Tubeless Valve Stem (good for disc wheels but too short for deep wheels) ![]() Vittoria Corsa Speed Clincher 700x23mm Tubeless Ready Tire You also need to invest in a set of tubeless valves, Stan's rim tape, and Orange Seal Tire Sealant. Use of metal tire lever is likely to damage to the carbon rim, don't do it. As a result I highly recommend investing in the Kool-Stop bead jack which makes getting these tires on rims much easier. Likely that is by design to prevent high pressure from the tire escaping to the outside. Unfortunately one draw back of this tire is it is not easy to mount and is significantly tighter than other tires and especially so on these tubeless rims like the HED JET+ and Enve 7. The extra weight of the sealant more than makes up for the weight of the tube but adds the possibilities of significant flat protection. Regardless the Vittoria Corsa Speed tires present a unique opportunity because it can be run tubeless - without a tube inside but with sealant. Much easier to mount the Vittoria Corsa Speed with this tool Kool Stop Bead Jack Tool vs Some Tire Levers We tested a brand new OLD 23mm Supersonic (measures narrower) and it still performed better aerodynamically but the tire is no longer in production and cannot be easily obtained. ![]() Testing showed that it was quite similar to the new 23mm Continental Supersonic. The purpose of this test was to investigate the aeroness of this new Vittoria Corsa Speed. While the Turbo Cotton 24mm has performed terribly from an aerodynamic perspective, the Continental Supersonic tires has similar rolling properties but with much better aerodynamics. Recent research by three independent sources has shown that the new Vittoria Corsa Speed is the new top dog by a wide margin. ![]() While the Specialized Turbo Cotton had been the top performer for rolling resistance for this style of tire. The exact same tube was used for all testing. All tires were brand new, purchased by myself from retail stores. The little plastic tips on the Conti tires were all plucked off prior to testing although some excess rubber as common with Conti tires is still on the center line. Some tires had to be pumped higher initially to get bead to snap, but then were deflated and reinflated to the proper psi. Tires were mounted in the direction indicated by the manufacturer. We tested clincher tires, the 23mm tires (New SS and Vittoria Corsa Speed) at 85psi, the 25mm tire at 81psi, and the 23mm OLD Supersonic, which measures small, at 88psi. This is just aero drag at 30mph and DOES NOT include rolling resistance. I also have the Enve 7 SES data that will be coming. I have released just the HED JET+ 6 Black data for simplicity. The following is the aero data from the A2 Wind Tunnel on. I have started a Slowtwitch thread for technical discussion of this. For now, 7 years of good flat karma for those that donated!!! Thank you again. It seems like a true watershed moment and I hope others do more testing in the future. Thank you for everyone that contributed to the GoFundMe campaign to help make this a success!!! Even though we were only at $700 at the time of testing, it is clear that people still giving means they value this independent research. Trying to shed some light on tires in the A2 Wind Tunnel ![]()
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