Road Bike Tire Test: Mavic Yksion Pro UST Tubeless

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Contents and Test Summary

  1. Introduction
  2. Manufacturer Specifications
  3. Size, Weight, Thickness
  4. Rolling Resistance: 11.7 watts
  5. Puncture Resistance: 10 tread / 6 sidewall
  6. Conclusion: 5.0 / 5 Highly Recommended
  7. Comments
  • Mavic Yksion Pro UST Tubeless
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)

Mavic Yksion Pro UST Tubeless road bike tire on a rolling resistance test machine

The Mavic Yksion Pro UST is a tubeless-ready tire that comes as the stock tire on a large range of Mavic UST wheels and wheelsets. Because the Yksion Pro UST is pretty much the only UST rated road bike tire available at the moment, I'm really curious to see if it's worth it to buy the new Mavic tubeless wheels.


Ad Buy Mavic Yksion Pro UST Tubeless at Amazon.com


I've already tested the entry level Mavic Yksion Elite (read review) last month and that tire didn't perform like a tire you'd want to run on your new expensive wheels.


The Yksion Pro UST is made in France by Hutchinson which is a big change from the cheaper Yksion Elite that's made in Taiwan. I've already tested some Hutchinson tires and they are some of the best performing tires in our tests.


The Yksion Pro UST uses Hutchinson's brand new "11 Storm" compound that's supposed to be an improvement over their older HDF 5.x compounds that I've tested last year and already were great compounds.


The Yksion Pro UST is a tubeless-ready tire which means that it should be used with tire sealant as the sidewalls will bleed air without it. The main advantage of the tubeless-ready tires is a lower weight and a lower rolling resistance because of the absence of a butyl inner liner that's often seen in "full tubeless" tires.


In my opinion, tubeless-ready tires are the way to go as most people are already using tire sealant in "full tubeless" tires to gain the advantage of self-sealing (small) punctures.

Manufacturer Specifications


Manufacturer Specifications
Brand Mavic
Model Yksion Pro UST Tubeless
Year 2018
Tire Type Tubeless
Supplied By Bought in store
New or Used New
Mileage 0 km
Price Range High
Buy At Ad Amazon.com
Manufacturer part number 39938825
EAN0889645491714
TPI 127
Compound 11 Storm
Bead Folding
ETRTO 25-622
Size Inch 28"
Width 25
Specified Weight 260 grams
Max Pressure 102
Made In France
Available Sizes 25-622 (700x25c)
28-622 (700x28c)

Mavic Yksion Pro UST Tubeless Test Results

Mavic Yksion Pro UST Tubeless road bike tire on a rolling resistance test machine

Size, Weight, and Thickness Measurements


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Size, Weight and Thickness Measurements
Specified Weight 260 grams
Measured Weight 256 grams
System Adjusted Weight
(tire + valve + rim seal)
276 grams
Measured Width 27 mm
Measured Height 24 mm
Total Tire Thickness Center 2.8 mm
Total Tire Thickness Sidewall 1.1 mm
Unmounted Casing Width 64 mm
Unmounted Tread Width 27 mm
All size measurements are taken at an air pressure of 100 psi / 6.9 bars on a 17.8 mm inner width rim.

Weight. The Yksion Pro UST in the 25-622 size has a specified weight of 260 grams. While 260 grams already is a low weight for a tubeless tire, my sample even comes in a bit lighter at 256 grams!


Size. At an air pressure of 100 psi / 6.9 bars, mounted to a 17 mm internal width rim, the maximum width of the tire is 27 mm. Height is 24 mm.


Tire Thickness. At the center of the tread, the Yksion Pro UST has a maximum thickness of 2.8 mm which is an average thickness for an all-round tire. Most tires in the all-round class have a thickness of 2.5 - 3.0 mm. No-compromise tires optimized for speed usually come in at less than 2.0 mm.


The sidewalls are quite thick as well with an average thickness of 1.1 mm. non-tubeless tires in this category usually have a sidewall thickness of ~0.5 mm.

Rolling Resistance Test Results


Rolling Resistance Test Results
Inner Tube None (20 ml sealant)
Rolling Resistance
140 PSI / 9.7 Bar
Not Tested
Rolling Resistance
120 PSI / 8.3 Bar
11.7 Watts
CRR: 0.00351
Rolling Resistance
100 PSI / 6.9 Bar
12.2 Watts
CRR: 0.00366
Rolling Resistance
80 PSI / 5.5 Bar
13.3 Watts
CRR: 0.00399
Rolling Resistance
60 PSI / 4.1 Bar
15.4 Watts
CRR: 0.00462
All numbers are for a single tire at a speed of 29 km/h / 18 mph and a load of 42.5 kg / 94 lbs.

Use the formula: RR (Watts) = CRR * speed (m/s) * load (N) to calculate rolling resistance at a given speed and load.

* Although the maximum rated air pressure as indicated on the sidewall is 102 psi / 7 bars, I did test the Yksion Pro UST at 120 psi / 8.3 bars to keep the results consistent across the website.


In the rolling resistance tests, the Yksion Pro UST performs much better than the Yksion Elite (read review) that I've tested last month. When we compare the Yksion Pro UST to the Schwalbe Pro One Tubeless (read review) that is similar in construction and weight, the Yksion Pro comes within 0.6 watts at all usable air pressures.


Although rolling resistance is a tiny bit higher than the Schwalbe Pro one, the Yksion Pro UST does have the advantage of a slightly thicker tread and sidewalls.


When we compare the Yksion Pro UST to the full list of clincher tires (road bike overview), we can conclude that rolling resistance is comparable to the best tubetype clincher tires that are tested with a 100 grams butyl inner tube. When compared to the best tube type clincher tires fitted with latex inner tubes, rolling resistance of the Yksion Pro is slightly higher.

Puncture Resistance Test Results

Mavic Yksion Pro UST Tubeless road bike tire on a rolling resistance test machine
Puncture Resistance Test Results (higher is better)
Puncture Resistance Tread 10 Points
Puncture Resistance Sidewall 6 Points

In the tread puncture resistance tests, the Yksion Pro UST scores 10 points which is slightly below the average of 11 points that most all-round tires with anti-puncture belts achieve.


In the sidewall test, it scores 6 points which is good and equal to the Schwalbe Pro One Tubeless.


I expect the Yksion Pro UST to provide good puncture resistance when used with 30 - 40 ml of sealant as the tread and sidewalls are quite thick (sealant works better on thicker tires).

Conclusion


  • Mavic Yksion Pro UST Tubeless
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)

If you're looking for a nice set of Mavic Comete Pro, Cosmic Pro, Cosmic Elite, Ksyrium Pro, or Ksyrium Elite in the UST version and are worried the tires that come with these wheels will hold you back, I can confirm that in our tests, these tires perform just as good as tires from the big tire brands.


With the Mavic UST wheel and tire combination, you'll also get the added benefit of easier tire inflation as the rim and tire are made to tighter tolerances.


Even if you're not running Mavic wheels, the Yksion Pro UST might be worth considering as it's pretty equal in performance to tires from the bigger brands.


Have you used the new Mavic / Hutchinson 11 Storm compound? Consider leaving a comment as I'm curious how this compound performs on wet and dry roads.

Ad Buy Mavic Yksion Pro UST Tubeless at Amazon.com


RATING: 5.0 / 5
TEST VERDICT:
Highly Recommended


Comments



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