CX/Gravel Tire Comparison:
Challenge Gravel Grinder 2020 vs
WTB Nano TCS Light 2020

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Contents and Test Summary

  1. Manufacturer Specifications
  2. Size and Weight Measurements
  3. Rolling Resistance Test Results
  4. Puncture Resistance Test Results
  5. Conclusion
  • Challenge Gravel Grinder
  • WTB Nano TCS Light
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)

Manufacturer Specifications


Manufacturer Specifications
Brand ChallengeWTB
Model Gravel GrinderNano TCS Light
Year 20202020
Supplied By Bought in storeBought in store
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range HighHigh
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Manufacturer Part Number 00535W010-0692
EAN 8855627005356
TPI 26060
Compound Dual DNA
Bead FoldingFolding
ETRTO 33-62240-622
Specified Weight 0 grams497 grams
Min Air Pressure 35 psi25 psi
Max Air Pressure 75 psi50 psi
Made In ThailandChina
Available Sizes 33-622 (700x33x)
36-622 (700x36c)
40-622 (700x40c)
Image
Challenge Gravel Grinder 2020
WTB Nano TCS Light 2020
Image
Challenge Gravel Grinder 2020
WTB Nano TCS Light 2020
Image
Challenge Gravel Grinder 2020
WTB Nano TCS Light 2020

Size and Weight Measurements


Size and Weight Measurements
Model Gravel GrinderNano TCS Light
Specified Weight 0 grams497 grams
Measured Weight 412 grams480 grams
Measured Width Casing 33 mm40 mm
Measured Width Tread 33 mm38 mm
Measured Height 31 mm40 mm
Measured Knob Height Center 0.7 mm2.9 mm
Measured Knob Height Edge 2.3 mm2.5 mm
Measured Total Thickness Sidewall 1.20 mm0.80 mm
Measured Casing Thickness Center 2.60 mm2.10 mm
All size measurements are taken at low air pressure on a 17.8 mm inner width rim.

Rolling Resistance Test Results


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Rolling Resistance Test Results
Model Gravel GrinderNano TCS Light
Inner Tube Conti Cross28 (160 gr)Conti Cross28 (160 gr)
Spin Up Video YouTubeYouTube
Measured Width 33 mm40 mm
Rolling Resistance
Real tire width in mm:
30-32 = 66 psi/4.6 bar
33-35 = 60 psi/4.1 bar
36-40 = 54 psi/3.7 bar
High Air Pressure
23.5 Watts
CRR: 0.00704
25.5 Watts
CRR: 0.00764
Rolling Resistance
Real tire width in mm:
30-32 = 55 psi/3.8 bar
33-35 = 50 psi/3.4 bar
36-40 = 45 psi/3.1 bar
Medium Air Pressure
25.1 Watts
CRR: 0.00752
26.5 Watts
CRR: 0.00794
Rolling Resistance
Real tire width in mm:
30-32 = 44 psi/3.0 bar
33-35 = 40 psi/2.8 bar
36-40 = 36 psi/2.6 bar
Low Air Pressure
28.7 Watts
CRR: 0.00860
28.6 Watts
CRR: 0.00857
Rolling Resistance
Real tire width in mm:
30-32 = 33 psi/2.3 bar
33-35 = 30 psi/2.1 bar
36-40 = 27 psi/1.9bar
Extra Low Air Pressure
33.9 Watts
CRR: 0.01016
32.3 Watts
CRR: 0.00968
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 Result (higher is better)
Model Gravel GrinderNano TCS Light
Puncture Resistance Tread 15 Points6 Points
Puncture Resistance Side 4 Points4 Points

Conclusion


Conclusion
Model Gravel GrinderNano TCS Light
Full Review Full ReviewFull Review
Verdict RecommendedRecommended
Rating 3.5 / 53.0 / 5
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  • Challenge Gravel Grinder
  • WTB Nano TCS Light
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)


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