The Guru One HT is among the very few tubular street bike tires accessible from Schwalbe. Because the majority of the tires which are created by Schwalbe perform good from the rolling resistance evaluations, I am very curious to observe how their tubular variant of the Guru One plays. The Guru One HT is a brand new 2017 version year tire which has seemingly replaced the old One tubular. The HT portion of this title implies it is a handmade tubular scooter that based on Schwalbe guarantees exceptional quality.
When compared to the elderly One tubular, the Guru One HT includes a much nicer diamond tread pattern, and tire weight seems to have gone down with 20 g for the 22 millimeter model. I could not find some other obvious differences between both of these tires as both nevertheless utilize a 107 TPI casing and OneStar compound. I am analyzing the 25 millimeter version as which comes closest to another street bicycle tires that I’ve examined over the previous 3 decades.
All rolling resistance evaluations are conducted on our rolling resistance test system. Read our The Evaluation page for a detailed explanation about how we examine tires.
Do not forget to have a look at the review pages to make it simpler to compare all of tires which were examined.
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The given weight of the 25 mm Guru One HT is 290 g, my sample comes in at a slightly heftier 304 g. In an air pressure of 100 psi / 6.9 pubs, this scooter has a diameter of 25 mm and a height of 23 mm.
After cutting the scooter available, we could observe the Guru One HT has a butyl inner tube exactly enjoy the Continental Contest (read review). The Schwalbe inner tube is somewhat thicker at 0.55 mm compared to the Continental internal tube that has a depth of simply 0.40 mm. By comparison, the Vittoria Corsa G tubular (read review) includes a latex inner tube that lowers rolling resistance a little. The entire depth of the tread of the Guru One HT, in the middle of the tire, is 2.6 mm. The sidewalls are extremely thin because they have a depth of just 0.45 mm.
*Tubular gluing process: Continental rim cement, two layers on rim, two layers on drill -> let dry for 24 hours. The following day: 1 coating on drill, mount tire to rim -> let dry for 72 hours. Test tire following 72 hours. For further details about mini bike pump with gauge, visit http://www.bikespumps.info/best-bike-pump.
From the rolling resistance evaluations, the Schwalbe Guru One HT does not impress me at all. Having a rolling resistance of 16.1 watts in an air pressure of 120 psi / 8.3 pubs, the Guru One HT is a lot slower compared to the Vittoria Corsa G (tubular) (read review) as well as the Continental Contest (read review). Upping the atmosphere pressure to 140 psi / 9.7 pubs seems to be near useless (even about the drum) since it lowers rolling resistance to only 15.8 watts. At lower air pressures, the Guru One HT does not impress either.
The Guru One HT is the very first premium tire from Schwalbe which underperforms from the rolling resistance evaluations. When we examine the clincher and tubeless street bike tires which use exactly the exact same Schwalbe OneStar chemical, rolling resistance of the Guru One HT should happen to be nearer to 12 g at 120 psi / 8.3 pubs. I have analyzed this drill several times to be certain that the results are right, but I actually could not get it to run any quicker. It appears like the tubular Vittoria Corsa G and Corsa Speed are still the tires to conquer for best rotational tire.
From the puncture resistance evaluations, the Guru One HT does not impress me either as it is outperformed by both the Vittoria Corsa G and Continental Competition at the tread puncture test. From the sidewall puncture evaluation, the Guru One scores an extremely low 3 points that pretty much is your lowest possible rating.
The Schwalbe Guru One HT performs considerably worse at the rolling resistance evaluations than it needs to when we believe the outcomes of different tires out of Schwalbe that utilize exactly the exact same OneStar compound. Rolling resistance is much worse than a cheap $25 clincher tires that’s not exactly what you expect from a bicycle that costs almost four times as much. In addition to the high rolling resistance, puncture resistance does not impress either. I can not find a reason to recommend this scooter as quicker tires can be found which cost exactly the same.
I didn’t test a good deal of tubular tires yet, but after analyzing the “all-round” tubular tires out of Vittoria, Continental, and Schwalbe, it seems as if you can not fail with all the Vittoria Corsa G tubular (read review). The Corsa G is the sole tubular tire that works on par with the best clincher tires.