CX/Gravel Tire Comparison:
Challenge Gravel Grinder 2020 vs
Michelin Power Gravel 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
  • Michelin Power Gravel
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)

Manufacturer Specifications


Manufacturer Specifications
Brand ChallengeMichelin
Model Gravel GrinderPower Gravel
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 00535474057
EAN 88556270053563528704740574
TPI 2603x120
Compound X-Miles compound
Bead FoldingFolding
ETRTO 33-62235-622
Specified Weight 0 grams380 grams
Min Air Pressure 35 psi44 psi
Max Air Pressure 75 psi73 psi
Made In ThailandThailand
Available Sizes 33-622 (700x33x)
36-622 (700x36c)
35-622 (700x35c)
Image
Challenge Gravel Grinder 2020
Michelin Power Gravel 2020
Image
Challenge Gravel Grinder 2020
Michelin Power Gravel 2020
Image
Challenge Gravel Grinder 2020
Michelin Power Gravel 2020

Size and Weight Measurements


Size and Weight Measurements
Model Gravel GrinderPower Gravel
Specified Weight 0 grams380 grams
Measured Weight 412 grams412 grams
Measured Width Casing 33 mm34 mm
Measured Width Tread 33 mm36 mm
Measured Height 31 mm32 mm
Measured Knob Height Center 0.7 mm1.2 mm
Measured Knob Height Edge 2.3 mm2.6 mm
Measured Total Thickness Sidewall 1.20 mm0.95 mm
Measured Casing Thickness Center 2.60 mm2.30 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 GrinderPower Gravel
Inner Tube Conti Cross28 (160 gr)Conti Cross28 (160 gr)
Spin Up Video YouTubeYouTube
Measured Width 33 mm34 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
20.2 Watts
CRR: 0.00606
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
22.0 Watts
CRR: 0.00659
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
24.1 Watts
CRR: 0.00722
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
28.1 Watts
CRR: 0.00842
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 GrinderPower Gravel
Puncture Resistance Tread 15 Points10 Points
Puncture Resistance Side 4 Points8 Points

Conclusion


Conclusion
Model Gravel GrinderPower Gravel
Full Review Full ReviewFull Review
Verdict RecommendedHighly Recommended
Rating 3.5 / 54.5 / 5
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  • Challenge Gravel Grinder
  • Michelin Power Gravel
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)


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