Tire Lab Test: Schwalbe G-One R Pro (black) 45

The Pro version of the Schwalbe G-One R, introduced in 2025, is a huge upgrade over the 2020-2024 Super Race version. We already tested the G-One R Pro in the 40 mm (read our review) and 50 mm sizes (read our review), and this time we're going to take a look at the 45 mm version to see how it stacks up to the competition.

It looks like Schwalbe recently changed the availability of the different sizes and sidewall colors, as we now see that the 35-622, 40-622, 45-622, and 50-622 sizes are available in both transparent and black sidewall colors. At the moment, only the recently introduced 55-622 version is available with black sidewalls, but if it follows the other sizes, we expect a transparent version to be introduced if there's enough demand for the biggest size.

If you want more information about the Schwalbe G-One R Pro, our review of the 40 mm version we tested a couple of months back provides a more in-depth introduction.

Manufacturer Specifications

Manufacturer Specs
Brand	Schwalbe
Model	G-One R Pro (black)
Year	2025
Supplied By	Bought in store
New or Used	New
Mileage	0 km
Price Range	High
Buy At
Manufacturer part number	11554582
EAN	4026495946223
TPI	67
Compound	Addix Race
Bead	Folding
ETRTO	45-622
Specified Weight	545 grams
Max Air Pressure (psi)	55
Made In	Pro Data
Available Sizes	35-622 (700x35c) 40-622 (700x40c) 45-622 (700x45c) 50-622 (700x50c) 55-622 (700x55c)

Schwalbe G-One R Pro (black) 45 Test Results

Size, Weight, and Thickness Measurements

Size, Weight, and Thickness Measurements
Specified Weight	545 grams
Measured Weight	532 grams
Measured Width Casing	42 mm (un-round)
Measured Width Tread	43 mm
Measured Height	Pro Data
Tire Circumference	Pro Data
Measured Knob Height Center	1.9 mm
Measured Knob Height Edge	2.3 mm
Measured Total Thickness Center (excluding knobs)	2.10 mm
Measured Total Thickness Sidewall	Pro Data
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	42 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 (50 psi / 3.4 bar)	Pro Data
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 (42 psi / 2.9 bar)	Pro Data
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 (33 psi / 2.3 bar)	17.7 Watts CRR: 0.00531
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 (25 psi / 1.7 bar)	Pro Data
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	29 Points
Total Puncture Score Sidewall	Pro Data
Tread Puncture Force Sharp Needle	Pro Data
Tread Puncture Force Blunt Needle	Pro Data
Tread Total Tire Thickness	2.10 mm
Sidewall Puncture Force Sharp Needle	Pro Data
Sidewall Puncture Force Blunt Needle	Pro Data
Sidewall Total Tire Thickness	Pro Data

Hard Surface Static Grip Test Results

Static Grip Test Results
Wet Grip Average	62 Points
Wet Grip Center	Pro Data
Wet Grip Edge	Pro Data
Measured Knob Height Center	1.9 mm
Measured Knob Height Edge	2.3 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

The 45 mm version of the Schwalbe G-One R Pro rolls a bit slower than the 40 (read our review) and 50 mm (read our review) versions we tested earlier this year. The difference is small, though, and some of it can be attributed to manufacturing tolerances and the test's margin of error.

We think that when a large number of samples of each size are tested, the larger G-One R sizes will roll slower on average because they have taller knobs than the smaller sizes. The taller knobs are probably the result of scaling the tread for the bigger sizes, where not only the surface area but also the height are scaled.

This test is another confirmation that larger sizes of most off-road tires have taller knobs than the smaller sizes, which we think might have been overlooked in the past.

Overall, the G-One R Pro is simply outstanding, and we recommend it to anyone.

RATING: 4.6 / 5
TEST VERDICT: Highly Recommended

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