CX/Gravel Tire Test: Schwalbe Pro One TLE Addix 38

NOTE: This 38 mm Schwalbe Pro One TLE was tested as a CX-Gravel tire at low air pressures. You can also find a test of the 25 mm Pro One TLE in the road bike section.

The Pro One TLE is Schwalbe's most high-end all-round road bike tire, and it's available in many sizes. We already tested both the 32 mm (read our review) and 34 mm (read our review) versions last year, and this time, we will look at the recently released 38 mm version that will be an excellent choice for gravel bikes and touring bikes that require the absolute fastest tire type.

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Over the last few years, we've seen a trend towards bigger road bike tires, and most newly introduced road bike tires now include 32-622 sizes, and some even go up to the 35-622 size. It now looks like manufacturers are ready to go even bigger, and 38, and 40-mm versions of their fastest road tires are becoming available. Schwalbe has an excellent reputation regarding the availability of many sizes, and we're not surprised they're among the first to introduce a 38/40 mm road bike tire.

We've already given plenty of introduction of the Schwalbe Pro One as it's been around for a long time. We recommend reading the other Pro One articles on our website if you're interested in more information about the Pro One.

Manufacturer Specifications

Manufacturer Specs
Brand	Schwalbe
Model	Pro One TLE Addix
Year	2024
Supplied By	Bought in store
New or Used	New
Mileage	0 km
Price Range	High
Buy At	Ad Amazon.com
Manufacturer part number	11654435
EAN	4026495915014
TPI	127
Compound	Addix Race
Bead	Folding
ETRTO	38-622
Specified Weight	410 grams
Max Air Pressure (psi)	65
Made In	Members Only
Available Sizes	25-622 (700x25c) 28-622 (700x28c) 30-622 (700x30c) 32-622 (700x32c) 34-622 (700x34c) 38-622 (700x38c) 25-584 (650x25b) 28-584 (650x28b) 28-559 (26x1.10) 28-406 (20x1.10)

Schwalbe Pro One TLE Addix 38 Test Results

Size, Weight, and Thickness Measurements

Size, Weight, and Thickness Measurements
Specified Weight	410 grams
Measured Weight	413 grams
Measured Width Casing	36 mm (un-round)
Measured Width Tread	35 mm
Measured Height	35 mm (un-round)
Measured Knob Height Center	0.0 mm
Measured Knob Height Edge	0.0 mm
Measured Total Thickness Center (excluding knobs)	3.20 mm
Measured Total Thickness Sidewall	Members Only
All size measurements are taken at low air pressure on a 17.8 mm inner width rim.

Rolling Resistance Test Results

Rolling Resistance Test Results
Inner Tube	None (30 ml sealant)
Measured Width	36 mm
Rolling Resistance Real tire width in mm: 30-32 = 66 psi/4.6 bar 33-35 = 60 psi/4.1 bar 36-38 = 54 psi/3.7 bar 39-42 = 50 psi/3.4 bar 43-46 = 46 psi/3.2 bar 47-50 = 42 psi/2.9 barHigh Air Pressure (54 psi / 3.7 bar)	Members Only
Rolling Resistance Real tire width in mm: 30-32 = 55 psi/3.8 bar 33-35 = 50 psi/3.4 bar 36-38 = 45 psi/3.1 bar 39-42 = 42 psi/2.9 bar 43-46 = 38 psi/2.6 bar 47-50 = 35 psi/2.4 barMedium Air Pressure (45 psi / 3.1 bar)	Members Only
Rolling Resistance Real tire width in mm: 30-32 = 44 psi/3.0 bar 33-35 = 40 psi/2.8 bar 36-38 = 36 psi/2.6 bar 39-42 = 33 psi/2.3 bar 43-46 = 31 psi/2.1 bar 47-50 = 28 psi/1.9 barLow Air Pressure (36 psi / 2.6 bar)	14.3 Watts CRR: 0.00429
Rolling Resistance Real tire width in mm: 30-32 = 33 psi/2.3 bar 33-35 = 30 psi/2.1 bar 36-38 = 27 psi/1.9 bar 39-42 = 25 psi/1.7 bar 43-46 = 23 psi/1.6 bar 47-50 = 21 psi/1.4 barExtra Low Air Pressure (27 psi / 1.9 bar)	16.9 Watts CRR: 0.00507
The CX/Gravel section is a multi tire size section, air pressures have been adjusted to the measured casing width. 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.

Puncture Resistance Test Results

Puncture Resistance Test Results (higher is better)
Total Puncture Score Tread	42 Points
Total Puncture Score Sidewall	Members Only
Tread Puncture Force Sharp Needle	Members Only
Tread Puncture Force Blunt Needle	Members Only
Tread Total Tire Thickness	3.20 mm
Sidewall Puncture Force Sharp Needle	Members Only
Sidewall Puncture Force Blunt Needle	Members Only
Sidewall Total Tire Thickness	Members Only

Hard Surface Static Grip Test Results

Static Grip Test Results
Wet Grip Average	64 Points
Wet Grip Center	Members Only
Wet Grip Edge	Members Only
Measured Knob Height Center	0.0 mm
Measured Knob Height Edge	0.0 mm
Grip in points = coefficient of friction * 100 CX/Gravel grip test rim width = 23.0 mm
Wet Grip Test and Off-Road Tires (info)

Conclusion

If you're looking for a 38/40 mm road bike tire, your choices are limited, and the Schwalbe Pro One TLE will probably be at the top of your list. The 38 mm version of the Pro One performs similarly to the 32 and 34 mm versions we tested last year. We see some subtle differences, like a thicker tread, which we see more often on the bigger versions of the same tire.

Our wet grip tests again show that the Schwalbe Pro One has a dual compound rubber with a harder compound in the middle and a softer compound along the edge. The result of this dual compound is that the overall wet grip is lower than most comparable tires due to the relatively low grip of the center compound, while the edge grip tests show decent results. The 38 mm version seems to grip a bit less than the 32 and 34 mm versions, and we think it's because the hard center part is a bit wider on this size.

We rate the 38 mm version higher than the 32 and 34 mm versions simply because it's one of the few road bike tires available in the 38 mm version. For a tire of this size, it is simply one of the fastest on the market.

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RATING: 4.3 / 5
TEST VERDICT: Highly Recommended

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