CX/Gravel Tire Test: Schwalbe G-One Ultrabite TLE SpeedGrip 40

The G-One series is Schwalbe's line of gravel tires. At the time of writing, the G-One line consists of 4 tires from fast tread to aggressive tread: G-One Speed, G-One Allround, G-One Bite, and G-One Ultrabite. At the moment only the Ultrabite version is available with Schwalbe's latest Addix compound. We'll test the other versions as soon as they become available with the new Addix compound.

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The G-One Ultrabite has aggressive knobs that we would expect more from a mountain bike tire. We can't imagine that you would want to go even more aggressive on a gravel bike because you might be better off grabbing a mountain bike.

The G-One Ultrabite in size 40-622 that we have tested is composed of a MicroSkin TLE casing and the Addix SpeedGrip compound which we also know from Schwalbe's mountain bike tires. The TLE casing has reinforced sidewalls which makes this tire suitable for tubeless use.

Manufacturer Specifications

Manufacturer Specs
Brand	Schwalbe
Model	G-One Ultrabite TLE SpeedGrip
Year	2020
Supplied By	Bought in store
New or Used	New
Mileage	0 km
Price Range	High
Buy At	Ad Amazon.com
Manufacturer part number	11654035.01
EAN	4026495873802
TPI	127
Compound	Addix SpeedGrip
Bead	Folding
ETRTO	40-622
Specified Weight	480 grams
Max Air Pressure (psi)	70
Made In	Members Only
Available Sizes	40-622 (700x38)

Schwalbe G-One Ultrabite TLE SpeedGrip 40 Test Results

Size, Weight, and Thickness Measurements

Size, Weight, and Thickness Measurements
Specified Weight	480 grams
Measured Weight	564 grams
Measured Width Casing	37 mm (un-round)
Measured Width Tread	41 mm
Measured Height	36 mm (un-round)
Measured Knob Height Center	2.3 mm
Measured Knob Height Edge	3.3 mm
Measured Total Thickness Center (excluding knobs)	2.30 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) (current protocol)	Conti Cross28 (160 gr) (test protocol)
Measured Width	37 mm	37 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	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	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)	26.0 Watts CRR: 0.00779	29.8 Watts CRR: 0.00893
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)	28.3 Watts CRR: 0.00848	33.3 Watts CRR: 0.00998
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	36 Points
Total Puncture Score Sidewall	Members Only
Tread Puncture Force Sharp Needle	8
Tread Puncture Force Blunt Needle	Members Only
Tread Total Tire Thickness	2.30 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	60 Points
Wet Grip Center	Members Only
Wet Grip Edge	Members Only
Measured Knob Height Center	2.3 mm
Measured Knob Height Edge	3.3 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 G-One is a very aggressive gravel bike tire. Unfortunately, the tire is not as fast as what we were used to from the Schwalbe tires from the past. The tread is very aggressive, if you are mainly looking for a lot of grip on your gravel bike, these are probably some of the best.

The weight is very disappointing from this tire, specified is an already high 480 grams but our tire weighs 564 grams which we would certainly return if we used them for any reason other than this test. We rate this tire a 3 out of 5 mainly because of the aggressive tread profile that is unique in this size.

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RATING: 3.0 / 5
TEST VERDICT: Recommended

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