I know you all love data, clinchers, latex, and tests:
http://bikeboard.at/Board/Die-schnellsten-Reifen-der-Welt-th178993 (in German).
They used the same test machinery as the Tour magazine. They also only used Latex tubes.
Hotlinking the results:
cheers
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
it might, but given the odd differing pressure protocol of this test I wouldn’t assume for sure that it is all accurate.
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
So… if the Schwalbe Ultremo ZX tubeless has a claimed (by Schwalbe) 25% lower resistance than the ZLX… hmm…
Looks like Breite is width and Hohe is height making the Bonty likely to be a bit more aero than all except the Veloflex.
sounds like…
marketing madness!
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
So… if the Schwalbe Ultremo ZX tubeless has a claimed (by Schwalbe) 25% lower resistance than the ZLX… hmm…
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
it might, but given the odd differing pressure protocol of this test I wouldn’t assume for sure that it is all accurate.
Yeah…that pressure thing IS a bit odd…I wonder if there’s more info on that determination.
In any case, it sure is starting to look like that VF Record I have is a dog…
Oh yeah, I got a kick out of them claiming that they had to use that flat belt rig instead of a roller because there’s no way to “translate” the results to a flat surface. Besides getting it wrong that the roller tests actually show a HIGHER raw power requirement (they claimed lower), guess how their results compared to my results for the R4 Aero with my “roller to flat” conversion, and for a smooth surface?
Them: 22.25W @ 40km/hr
Me: 22W @ 40km/hr
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
So… if the Schwalbe Ultremo ZX tubeless has a claimed (by Schwalbe) 25% lower resistance than the ZLX… hmm…
I’ll bet the Schwalbe claim is based on a butyl tube in the ZLX, and not a latex one like in that test.
The Veloflex Record has always tested very well (and it should since supple, 350 tpi casing, no puncture layer, etc.). What they don’t list are the tire sizes (widths), but the Record is 20mm wide making it a good choice on an older Hed Jet for example for a TT. Not sure I’d run for a long tri though.
As for the Ultrema ZLX vs. the Corsa EVO, who knows. Could be a 23 ZLX vs. a 20 Corsa, etc. This is why they used different pressures (higher pressure in the narrower volume tires I would assume)
Higher pressure in the Record may make sense as its smaller. In theory for every road/tire/rim/rider combo the optimum pressure will be just a bit different. I guess ideally they would use the best pressure for each, but that sure adds a lot of testing.
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
So… if the Schwalbe Ultremo ZX tubeless has a claimed (by Schwalbe) 25% lower resistance than the ZLX… hmm…
I’ll bet the Schwalbe claim is based on a butyl tube in the ZLX, and not a latex one like in that test.
How many Watts roughly does a butyl tube cost? 3-4?
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
So… if the Schwalbe Ultremo ZX tubeless has a claimed (by Schwalbe) 25% lower resistance than the ZLX… hmm…
I’ll bet the Schwalbe claim is based on a butyl tube in the ZLX, and not a latex one like in that test.
How many Watts roughly does a butyl tube cost? 3-4?
Typically ~15% higher Crr (for fast tires).
I’ll reserve judgement until I see, or do, a head to head between those 2 tires…that said, I didn’t realize until this point that the ZLX has NO puncture belt at all.
The Veloflex Record has always tested very well (and it should since supple, 350 tpi casing, no puncture layer, etc.). What they don’t list are the tire sizes (widths), but the Record is 20mm wide making it a good choice on an older Hed Jet for example for a TT. Not sure I’d run for a long tri though.
As for the Ultrema ZLX vs. the Corsa EVO, who knows. Could be a 23 ZLX vs. a 20 Corsa, etc. This is why they used different pressures (higher pressure in the narrower volume tires I would assume)
The widths are listed…along with the mounted widths and heights. E.g. the VF measures out at 22.7W x 18.9H when mounted on a Zipp FC 404(?)
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
So… if the Schwalbe Ultremo ZX tubeless has a claimed (by Schwalbe) 25% lower resistance than the ZLX… hmm…
I’ll bet the Schwalbe claim is based on a butyl tube in the ZLX, and not a latex one like in that test.
How many Watts roughly does a butyl tube cost? 3-4?
Typically ~15% higher Crr (for fast tires).
I’ll reserve judgement until I see, or do, a head to head between those 2 tires…that said, I didn’t realize until this point that the ZLX has NO puncture belt at all.
I can’t think of many courses I would trust that tire.
I’m really curious about the Ironman branded Schwalbes now… are they that much better? Or marketing hype…
The Veloflex Record has always tested very well (and it should since supple, 350 tpi casing, no puncture layer, etc.). What they don’t list are the tire sizes (widths), but the Record is 20mm wide making it a good choice on an older Hed Jet for example for a TT. Not sure I’d run for a long tri though.
As for the Ultrema ZLX vs. the Corsa EVO, who knows. Could be a 23 ZLX vs. a 20 Corsa, etc. This is why they used different pressures (higher pressure in the narrower volume tires I would assume)
The widths are listed…along with the mounted widths and heights. E.g. the VF measures out at 22.7W x 18.9H when mounted on a Zipp FC 404(?)
Ah, see that now. Failed my German exam 
So as expected, the ZLX appears to run wide and the Record is only sold in 20c I think. So, really, that likely makes the Record a very fast tire depending on rim/bike application. Oh yeah, that is what I run on front (Supersonic 20 on a rear disc)
The Veloflex Record has always tested very well (and it should since supple, 350 tpi casing, no puncture layer, etc.). What they don’t list are the tire sizes (widths), but the Record is 20mm wide making it a good choice on an older Hed Jet for example for a TT. Not sure I’d run for a long tri though.
As for the Ultrema ZLX vs. the Corsa EVO, who knows. Could be a 23 ZLX vs. a 20 Corsa, etc. This is why they used different pressures (higher pressure in the narrower volume tires I would assume)
Oh, and according to the text, it appears that the Corsa SC has a Kevlar based puncture layer now…sorry, but Kevlar is a SLOW material to use for that. :-/
They used the same test machinery as the Tour magazine.
Hi Aralo,
Have you got more info about the testing methodology? I have just found this photo
Not really. This is the chance to just ask the author of the article exactly that. He seems to be pretty good at replying to comments. I’d assume he knows English
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
it might, but given the odd differing pressure protocol of this test I wouldn’t assume for sure that it is all accurate.
Looking at the German small print, they went with the manufacturer´s recommended PSI for each tyre, relative to the combined weight of bike & rider being tested (85kg):
** Einsatz TT/BZF/flache Straßenrennen, Systemgewicht 85 kg
*** bei 85 kg Systemgewicht und BB-Reifendruck-Empfehlung.
Thanks for the info. Veloflex Record rocks! Who would have thought Schwalbe Ultremo ZLX has lower rolling resistance than Vittoria Open Corsa EVO.
it might, but given the odd differing pressure protocol of this test I wouldn’t assume for sure that it is all accurate.
Looking at the German small print, they went with the manufacturer´s recommended PSI for each tyre:
** Einsatz TT/BZF/flache Straßenrennen, Systemgewicht 85 kg
*** bei 85 kg Systemgewicht und BB-Reifendruck-Empfehlung.
From the article text (and Google Translate)
The respective test pressure was determined in previous Bikeboard.at of driving tests on the same rolling test track.
Whatever that means…