Tire Evaluation – Schwalbe Guru One Tubeless

The Schwalbe Guru One Tubeless is a brand new 2016 model year tire; it needs to be available for sale after this year. The Guru One Tubeless is not only a slightly improved version of the first One Tubeless, but an entirely new layout. The Guru One is 25% lighter and today carries the Tubeless-Easy batch, so this means it takes 20 ml of tire sealant to create the bicycle seal. Schwalbe delivered me a set of them to check; they need to be sure that the tires are quickly!

Even though the first One Tubeless (inspection) currently has an extremely low rolling resistance, I was not really a fan of it. I always believed that the tire was too thick and did not allow it to be worthwhile to change to a tubeless setup. Overall wheel weight and rolling resistance were rather near the typical One V-Guard (inspection). In addition you lost the choice to match latex tubes (Schwalbe One contrast) to decrease rolling resistance and weight much more.

To make it feasible to lower the weight by 25%, Schwalbe currently utilizes a MicroSkin structure. This fresh MicroSkin cloth is put from bead to bead and takes good care of sealing the bicycle at the very substantial pressures used in street bicycle tires. Additionally, it guarantees high-pressure equilibrium and enhances cut resistance. With this new structure also comes the Tubeless-Easy part along with also the necessity to utilize 20 ml of tire sealant.

The huge drawback of utilizing latex inner tubes is that they lose air fast and need re-inflating daily. Since the first One Tubeless needed a thick butyl coating on the interior of the tire, it kept atmosphere equally in addition to regular inner tubes. I’ve tracked the atmosphere pressure of this new Guru One with 20 ml of sealant on a 48-hour interval, and it fell out of 110 psi to 100 psi. It is possible it begins to seal somewhat better after a couple of days. I shall update this article once more information is available.

Update: Once tracking air pressure over a seven day interval, it appears the Guru One Tubeless began sealing just a tiny bit better. These measurements have been taken after a few evaluations and remounting the bicycle three days. I have also upped the amount of sealant to 30 ml. See table for outcomes.

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.

Road Bike Overview Mountain Bike Overview Tour/E-Bike Overview Fat Bike Overview

Schwalbe delivered me a 25 millimeter edition of the Guru One. The 25 millimeter version has a predetermined weight of 255 g, which can be a large improvement over the 340 g of the initial One Tubeless. For what it is worth, the two tires I received came in at a measured weight of 257 g. You do need to bring the 20 ml of tubeless sealant which adds 20 g to the entire wheel weight. Width and height onto a 17C rim comes in at 27 mm and 24 mm respectively.

The highest air pressure as indicated on the sidewall is 110 psi (like One Tubeless). I’d take measurements at 120 psi to maintain the outcomes constant across all of tires. I really don’t think this things because you should not run 25 millimeter tires in 120 psi anyway.

Rolling resistance is quite low! In an air pressure of 120 psi, rolling resistance is 11.0 g (11.8 One Tubeless). In the more usable air pressure of 100 psi, rolling resistance is 11.6 g (12.5 One Tubeless). Dropping air pressure into a comfortable 80 psi leads to a rolling resistance of 12.8 watts (13.8 One Tubeless).

Rolling immunity has gone down than this 1 Tubeless. Just once you replace the typical butyl inner tube using a latex inner tube (Grand Prix 4000S II 10.6 Watts | Schwalbe One V-Guard 10.8 watts) will you be able to receive a lower rolling resistance compared to the Guru One Tubeless.

* Sidewall puncture resistance is new information that’s been inserted after writing this review.

From the puncture resistance test, the Guru One Tubeless scores 11 points. This can be 1 thing less than the 1 Tubeless or One V-Guard (both 12 points).

The fantastic part is that while the analyzed puncture resistance is a bit reduced, real life puncture resistance will be a lot greater. When utilizing tire sealant at an actual tubeless tire, you get a bicycle which is going to be almost impossible to level. Holes of around 2-3 mm is going to be sealed immediately. Snakebites and warmth connected (braking) blowouts are also something of the past since the sensitive internal tubes have been removed.

I really do urge to add 30 ml of sealant for greater puncture resistance and quicker sealing rather than the 20 ml employed for this evaluation. Read my evaluation of tubeless sealant to view how this affects rolling resistance and why it does not function exactly the identical way once you simply add sealant into an inner tube.

I believe Schwalbe actually delivered a fantastic bicycle with the Guru One Tubeless. Here is the tire I have been awaiting convert into tubeless. The downside of shedding a bit of atmosphere over time does not matter to me personally as I

The Guru One Tubeless will probably be available after this year. It’ll be accessible 23 25 and 28 millimeter versions. Also, very good news for its recumbent fans: it’ll be accessible in a 28 mm broad 20-inch edition. Now, let us sit back and wait patiently on the Continental Grand Prix 4000S III Tubeless statement!

For more details about bike pump types, check out Bikespumps.