Touring Bike Tire Comparison:
CST E-Series Reach 2015 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
  • CST E-Series Reach
  • Schwalbe Kojak
Performance compared to all other touring bike tires
(100% is fastest - lightest - thickest - strongest)
Pro Members get 9-point radar charts

Manufacturer Specifications


Manufacturer Specs
Brand CSTSchwalbe
Model E-Series ReachKojak
Year 20152017
Supplied By Supplied by ContinentalBought 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 11600020.01
TPI -67
Compound SpeedGrip
Bead WireFolding
ETRTO 37-62235-622
Size Inch 28"28"
Width mm 3735
Specified Weight 734 grams330 grams
Min Air Pressure 50 psi55 psi
Max Air Pressure 75 psi95 psi
Made In Members OnlyMembers Only
Available Sizes 37-622 (28x1.40)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
CST E-Series Reach 2015
Schwalbe Kojak 2017
Image
CST E-Series Reach 2015
Schwalbe Kojak 2017
Image
CST E-Series Reach 2015
Schwalbe Kojak 2017

Size and Weight Measurements


Size and Weight Measurements
Model E-Series ReachKojak
Specified Weight 734 grams330 grams
Measured Weight 734 grams351 grams
Measured Width Casing 37 mm (un-round)33 mm (un-round)
Measured Height 34 mm (un-round)31 mm (un-round)
Tread Depth 1.1 mm0 mm
Total Tire Thickness Center 4.4 mm3.9 mm
Total Tire Thickness Sidewall Members OnlyMembers Only
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 E-Series ReachKojak
Spin Up Video No VideoYouTube
Inner Tube Conti Tour 28 (170 gr butyl)Conti Tour 28 (170 gr butyl)
Rolling Resistance
90 PSI / 6 Bar
No DataMembers Only
Rolling Resistance
75 PSI / 5 Bar
19.0 Watts
CRR: 0.00570
21.9 Watts
CRR: 0.00656
Rolling Resistance
60 PSI / 4 Bar
21.9 Watts
CRR: 0.00656
24.8 Watts
CRR: 0.00743
Rolling Resistance
45 PSI / 3 Bar
Members OnlyMembers Only
Rolling Resistance
30 PSI / 2 Bar
Members OnlyMembers Only
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 E-Series ReachKojak
Puncture Resistance Tread 10 Points12 Points
Puncture Resistance Side Members OnlyMembers Only
Puncture Factor Tread* 44 Points47 Points
Puncture Factor Side* Members OnlyMembers Only
* Puncture Factor = Puncture Resistance * Total Tire Thickness.
Puncture Factor provides a more realistic puncture resistance score for touring tires.

Conclusion


Conclusion
Model E-Series ReachKojak
Full Review Full ReviewFull Review
Verdict RecommendedNot Recommended
Rating 3 / 52 / 5
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  • CST E-Series Reach
  • Schwalbe Kojak
Performance compared to all other touring bike tires
(100% is fastest - lightest - thickest - strongest)

Pro Members get 9-point radar charts


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