Touring Bike Tire Comparison:
Schwalbe Kojak 2017 vs
Vittoria Randonneur 2015

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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
  • Schwalbe Kojak
  • Vittoria Randonneur
Performance compared to all other touring bike tires
(100% is fastest - lightest - thickest - strongest)

Manufacturer Specifications


Manufacturer Specs
Brand SchwalbeVittoria
Model KojakRandonneur
Year 20172015
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 11600020.01111.3R2.26.37.111TG
TPI 6730
Compound SpeedGrip
Bead FoldingWire
ETRTO 35-62237-622
Size Inch 28"28"
Width mm 3537
Specified Weight 330 grams570 grams
Min Air Pressure 55 psi psi
Max Air Pressure 95 psi70 psi
Made In IndonesiaThailand
Available Sizes 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)
37-622 (28x1.40)
Image
Schwalbe Kojak 2017
Vittoria Randonneur 2015
Image
Schwalbe Kojak 2017
Vittoria Randonneur 2015
Image
Schwalbe Kojak 2017
Vittoria Randonneur 2015

Size and Weight Measurements


Size and Weight Measurements (Bike Wheel: 622-17C, Pressure: 100 psi / 6.8 bar)
Model KojakRandonneur
Specified Weight 330 grams570 grams
Measured Weight 351 grams598 grams
Measured Width Casing 33 mm33 mm
Measured Height 31 mm33 mm
Tread Depth 0 mm1.8 mm
Total Tire Thickness Center 3.9 mm5.7 mm
Total Tire Thickness Sidewall 0.55 mm0.9 mm

Rolling Resistance Test Results


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Rolling Resistance Test Results (Speed: 29 kmh / 18 mph, Load: 42.5 kg)
Model KojakRandonneur
Inner Tube Conti Tour 28 (170 gr butyl)Conti Tour 28 (170 gr butyl)
Spin Up Video YouTubeNo Video
Rolling Resistance
90 PSI / 6 Bar
20.5 Watts
CRR: 0.00615
No Data
Rolling Resistance
75 PSI / 5 Bar
21.9 Watts
CRR: 0.00656
29.0 Watts
CRR: 0.00869
Rolling Resistance
60 PSI / 4 Bar
24.8 Watts
CRR: 0.00743
32.4 Watts
CRR: 0.00971
Rolling Resistance
45 PSI / 3 Bar
29.1 Watts
CRR: 0.00872
38.9 Watts
CRR: 0.01166
Rolling Resistance
30 PSI / 2 Bar
37.5 Watts
CRR: 0.01124
52.1 Watts
CRR: 0.01562
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 KojakRandonneur
Puncture Resistance Tread 12 Points21 Points
Puncture Resistance Side 3 Points4 Points
Puncture Factor Tread* 47 Points120 Points
Puncture Factor Side* 2 Points4 Points
* Puncture Factor = Puncture Resistance * Total Tire Thickness.
Puncture Factor provides a more realistic puncture resistance score for touring tires.

Conclusion


Conclusion
Model KojakRandonneur
Full Review Full ReviewFull Review
Verdict Not RecommendedNot Recommended
Rating 2 / 52 / 5
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  • Schwalbe Kojak
  • Vittoria Randonneur
Performance compared to all other touring bike tires
(100% is fastest - lightest - thickest - strongest)


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