Touring Bike Tire Comparison:
Continental Grand Prix Urban 2021 vs
Schwalbe Marathon (GreenGuard) 2015

Contents and Test Summary

  1. Manufacturer Specifications
  2. Size and Weight Measurements
  3. Rolling Resistance Test Results
  4. Puncture Resistance Test Results
  5. Static Grip Test Results
  6. Conclusion
  • Continental Grand Prix Urban
  • Schwalbe Marathon (GreenGuard) *
* Grip test data not available
Performance compared to all other touring bike tires
(100% is best)
Pro Members get 11-point radar charts



Manufacturer Specifications


Manufacturer Specs
Brand ContinentalSchwalbe
Model Grand Prix UrbanMarathon (GreenGuard)
Year 20212015
Supplied By Bought in storeSupplied by Schwalbe
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range HighMed
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Manufacturer Part Number 010157511100007
TPI 3/18067
Compound Black ChiliEndurance
Bead FoldingWire
ETRTO 35-62237-622
Size Inch 28"28"
Width mm 3537
Specified Weight 345 grams730 grams
Min Air Pressure 65 psi55 psi
Max Air Pressure 85 psi85 psi
Made In Members OnlyMembers Only
Available Sizes 35-622 (700x35c)40-635 (28x1.50)
32-630 (27x1.25)
50-622 (28x2.00)
47-622 (28x1.75)
40-622 (28x1.50)
37-622 (28x1.40)
32-622 (28x1.25)
28-622 (28x1.10)
25-622 (28x1.00)
23-622 (28x0.90)
37-590 (26x1.40)
44-584 (27.5x1.65)
50-559 (26x2.00)
47-559 (26x1.75)
40-622 (26x1.50)
32-559 (26x1.25)
47-507 (24x1.75)
47-406 (20x1.75)
40-406 (20x1.50)
44-355 (18x1.65)
35-349 (16x1.35)
47-305 (16x1.75)
Image
Continental Grand Prix Urban 2021
Schwalbe Marathon (GreenGuard) 2015
Image
Continental Grand Prix Urban 2021
Schwalbe Marathon (GreenGuard) 2015
Image
Continental Grand Prix Urban 2021
Schwalbe Marathon (GreenGuard) 2015

Size and Weight Measurements


Size and Weight Measurements
Model Grand Prix UrbanMarathon (GreenGuard)
Specified Weight 345 grams730 grams
Measured Weight 342 grams729 grams
Measured Width Casing 33 mm (un-round)35 mm (un-round)
Measured Height 32 mm (un-round)36 mm (un-round)
Tread Depth 0.8 mm2.3 mm
Total Tire Thickness Center 3.4 mm7.3 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


Rolling Resistance Test Results
Model Grand Prix UrbanMarathon (GreenGuard)
Spin Up Video YouTubeYouTube
Inner Tube Conti Tour 28 (170 gr butyl)Conti Tour 28 (170 gr butyl)
Rolling Resistance
90 PSI / 6 Bar
Members OnlyMembers Only
Rolling Resistance
75 PSI / 5 Bar
15.2 Watts
CRR: 0.00456
19.6 Watts
CRR: 0.00588
Rolling Resistance
60 PSI / 4 Bar
16.9 Watts
CRR: 0.00507
21.3 Watts
CRR: 0.00638
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 Grand Prix UrbanMarathon (GreenGuard)
Total Puncture Score Tread 66 Points124 Points
Total Puncture Score Sidewall Members OnlyMembers Only
Tread Puncture Force Sharp Needle Members OnlyMembers Only
Tread Puncture Force Blunt Needle Members OnlyMembers Only
Tread Total Tire Thickness 3.4 mm7.3 mm
Sidewall Puncture Force Sharp Needle Members OnlyMembers Only
Sidewall Puncture Force Blunt Needle Members OnlyMembers Only
Sidewall Total Tire Thickness Members OnlyMembers Only

Static Grip Test Results


Static Grip Test Results (higher is better)
Model Grand Prix UrbanMarathon (GreenGuard)
Wet Grip Average 68 PointsNo Data
Wet Grip Center Members OnlyMembers Only
Wet Grip Edge Members OnlyMembers Only
Grip in points = coefficient of friction * 100
Tour/E-Bike grip test rim width = 23.0 mm

Conclusion


Conclusion
Model Grand Prix UrbanMarathon (GreenGuard)
Full Review Full ReviewFull Review
Verdict Highly RecommendedHighly Recommended
Rating 4.7 / 55.0 / 5
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  • Continental Grand Prix Urban
  • Schwalbe Marathon (GreenGuard) *
* Grip test data not available
Performance compared to all other touring bike tires
(100% is fastest - lightest - thickest - strongest)

Pro Members get 11-point radar charts