Road Bike Tire Comparison:
Challenge Strada Pro 2017 vs
Continental Grand Prix 4000S II Latex Tube 2014

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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 Strada Pro
  • Continental Grand Prix 4000S II Latex Tube
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)

Manufacturer Specifications


Manufacturer Specifications
Brand ChallengeContinental
Model Strada ProGrand Prix 4000S II Latex Tube
Year 20172014
Tire Type Tubetype (clincher)Tubetype (clincher)
Supplied By Bought in storeBought in store
Full Review Full Review
New or Used NewNew
Mileage 0 km0 km
Price Range HighHigh
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Manufacturer Part Number 0100945
EAN
TPI 3003/330
Compound Black Chili
Bead FoldingFolding
ETRTO 25-62225-622
Size Inch 28"28"
Width mm 2525
Specified Weight 240 grams225 grams
Min Air Pressure 100 psi95 psi
Max Air Pressure 145 psi120 psi
Made In ThailandGermany
Available Sizes 25-622 (700x25C)20-622 (700x20C)
23-622 (700x23C)
25-622 (700x25C)
28-622 (700x28C)
23-571 (650x23C)
Image
Challenge Strada Pro 2017
Continental Grand Prix 4000S II Latex Tube 2014
Image
Challenge Strada Pro 2017
Continental Grand Prix 4000S II Latex Tube 2014
Image
Challenge Strada Pro 2017
Continental Grand Prix 4000S II Latex Tube 2014

Size and Weight Measurements


Size and Weight Measurements
Model Strada ProGrand Prix 4000S II Latex Tube
Specified Weight 240 grams225 grams
Measured Weight 254 grams215 grams
System Adjusted Weight 354 grams
(tire + inner tube)
315 grams
(tire + inner tube)
Measured Width 27 mm27 mm
Measured Height 24 mm25 mm
Total Tire Thickness Center 2.3 mm2.9 mm
Total Tire Thickness Sidewall 1 mm0.55 mm
Unmounted Casing Width No DataNo Data
Unmounted Tread Width No DataNo Data
All size measurements are taken at an air pressure of 100 psi / 6.9 bars on a 17.8 mm inner width rim.

Rolling Resistance Test Results


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Rolling Resistance Test Results
Model Strada ProGrand Prix 4000S II Latex Tube
Inner Tube Conti Race28 (100gr butyl)Michelin Latex
Spin Up Video YouTubeNo Video
Rolling Resistance
140 PSI / 9.7 Bar
Not TestedNot Tested
Rolling Resistance
120 PSI / 8.3 Bar
13.4 Watts
CRR: 0.00402
10.6 Watts
CRR: 0.00318
Rolling Resistance
100 PSI / 6.9 Bar
14.0 Watts
CRR: 0.00420
11.1 Watts
CRR: 0.00333
Rolling Resistance
80 PSI / 5.5 Bar
15.3 Watts
CRR: 0.00459
11.8 Watts
CRR: 0.00354
Rolling Resistance
60 PSI / 4.1 Bar
17.9 Watts
CRR: 0.00537
13.3 Watts
CRR: 0.00399
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)
Model Strada ProGrand Prix 4000S II Latex Tube
Puncture Resistance Tread 11 Points11 Points
Puncture Resistance Sidewall 3 Points5 Points

Conclusion


Conclusion
Model Strada ProGrand Prix 4000S II Latex Tube
Full Review Full Review
Verdict RecommendedHighly Recommended
Rating 3 / 55 / 5
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  • Challenge Strada Pro
  • Continental Grand Prix 4000S II Latex Tube
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)


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