Touring Bike Tire Comparison:
Continental Sport Contact II 2016 vs
Schwalbe Kojak 2017

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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
  • Continental Sport Contact II
  • Schwalbe Kojak
Performance compared to all other touring bike tires
(100% is fastest - lightest - thickest - strongest)

Manufacturer Specifications


Manufacturer Specs
Brand ContinentalSchwalbe
Model Sport Contact IIKojak
Year 20162017
Supplied By Bought in storeBought in store
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range MedMed
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Manufacturer Part Number 010101511600020.01
TPI 3/18067
Compound SpeedGrip
Bead WireFolding
ETRTO 37-62235-622
Size Inch 28"28"
Width mm 3735
Specified Weight 520 grams330 grams
Min Air Pressure 75 psi55 psi
Max Air Pressure 90 psi95 psi
Made In IndiaIndonesia
Available Sizes 42-622 (28x1.60)
37-622 (28x1.40)
32-622 (28x1.25)
28-622 (28x1.10)
50-559 (26x2.00)
42-559 (26x1.60)
32-559 (26x1.25)
28-406 (20x1.10)
32-355 (18x1.25)
32-369 (27x1 1/4)
35-406 (20x1.35)
35-559 (26x1.35)
50-559 (26x2.00)
35-622 (28x.135)
Image
Continental Sport Contact II 2016
Schwalbe Kojak 2017
Image
Continental Sport Contact II 2016
Schwalbe Kojak 2017
Image
Continental Sport Contact II 2016
Schwalbe Kojak 2017

Size and Weight Measurements


Size and Weight Measurements
Model Sport Contact IIKojak
Specified Weight 520 grams330 grams
Measured Weight 479 grams351 grams
Measured Width Casing 36 mm33 mm
Measured Height 34 mm31 mm
Tread Depth 0.5 mm0 mm
Total Tire Thickness Center 4.2 mm3.9 mm
Total Tire Thickness Sidewall 1 mm0.55 mm
All size measurements are taken at an air pressure of 60 psi / 4 bars on a 17.8 mm inner width rim.

Rolling Resistance Test Results


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Rolling Resistance Test Results
Model Sport Contact IIKojak
Inner Tube Conti Tour 28 (170 gr butyl)Conti Tour 28 (170 gr butyl)
Spin Up Video YouTubeYouTube
Rolling Resistance
90 PSI / 6 Bar
18.1 Watts
CRR: 0.00543
20.5 Watts
CRR: 0.00615
Rolling Resistance
75 PSI / 5 Bar
18.9 Watts
CRR: 0.00567
21.9 Watts
CRR: 0.00656
Rolling Resistance
60 PSI / 4 Bar
20.6 Watts
CRR: 0.00618
24.8 Watts
CRR: 0.00743
Rolling Resistance
45 PSI / 3 Bar
23.8 Watts
CRR: 0.00713
29.1 Watts
CRR: 0.00872
Rolling Resistance
30 PSI / 2 Bar
30.1 Watts
CRR: 0.00902
37.5 Watts
CRR: 0.01124
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 Sport Contact IIKojak
Puncture Resistance Tread 13 Points12 Points
Puncture Resistance Side 5 Points3 Points
Puncture Factor Tread* 55 Points47 Points
Puncture Factor Side* 5 Points2 Points
* Puncture Factor = Puncture Resistance * Total Tire Thickness.
Puncture Factor provides a more realistic puncture resistance score for touring tires.

Conclusion


Conclusion
Model Sport Contact IIKojak
Full Review Full ReviewFull Review
Verdict RecommendedNot Recommended
Rating 4 / 52 / 5
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  • Continental Sport Contact II
  • Schwalbe Kojak
Performance compared to all other touring bike tires
(100% is fastest - lightest - thickest - strongest)


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