Road Bike Tire Comparison:
Continental Grand Prix 4000S II Latex Tube 2014 vs
Vredestein Fortezza Senso All Weather 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
  • Continental Grand Prix 4000S II Latex Tube
  • Vredestein Fortezza Senso All Weather
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)

Manufacturer Specifications


Manufacturer Specifications
Brand ContinentalVredestein
Model Grand Prix 4000S II Latex TubeFortezza Senso All Weather
Year 20142015
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 HighMed
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Manufacturer Part Number 010094528504
EAN
TPI 3/330120
Compound Black ChiliTriComp
Bead FoldingFolding
ETRTO 25-62225-622
Size Inch 28"28"
Width mm 2525
Specified Weight 225 grams240 grams
Min Air Pressure 95 psi85 psi
Max Air Pressure 120 psi130 psi
Made In GermanyThailand
Available Sizes 20-622 (700x20C)
23-622 (700x23C)
25-622 (700x25C)
28-622 (700x28C)
23-571 (650x23C)
23-622 (700x23C)
25-622 (700x25C)
28-622 (700x28C)
Image
Continental Grand Prix 4000S II Latex Tube 2014
Vredestein Fortezza Senso All Weather 2015
Image
Continental Grand Prix 4000S II Latex Tube 2014
Vredestein Fortezza Senso All Weather 2015
Image
Continental Grand Prix 4000S II Latex Tube 2014
Vredestein Fortezza Senso All Weather 2015

Size and Weight Measurements


Size and Weight Measurements
Model Grand Prix 4000S II Latex TubeFortezza Senso All Weather
Specified Weight 225 grams240 grams
Measured Weight 215 grams234 grams
System Adjusted Weight 315 grams
(tire + inner tube)
334 grams
(tire + inner tube)
Measured Width 27 mm26 mm
Measured Height 25 mm24 mm
Total Tire Thickness Center 2.9 mm3.2 mm
Total Tire Thickness Sidewall 0.55 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 Grand Prix 4000S II Latex TubeFortezza Senso All Weather
Inner Tube Michelin LatexConti Race28 (100gr butyl)
Spin Up Video No VideoNo Video
Rolling Resistance
140 PSI / 9.7 Bar
Not TestedNot Tested
Rolling Resistance
120 PSI / 8.3 Bar
10.6 Watts
CRR: 0.00318
18.0 Watts
CRR: 0.00540
Rolling Resistance
100 PSI / 6.9 Bar
11.1 Watts
CRR: 0.00333
19.7 Watts
CRR: 0.00591
Rolling Resistance
80 PSI / 5.5 Bar
11.8 Watts
CRR: 0.00354
21.8 Watts
CRR: 0.00653
Rolling Resistance
60 PSI / 4.1 Bar
13.3 Watts
CRR: 0.00399
24.6 Watts
CRR: 0.00737
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 4000S II Latex TubeFortezza Senso All Weather
Puncture Resistance Tread 11 Points13 Points
Puncture Resistance Sidewall 5 Points4 Points

Conclusion


Conclusion
Model Grand Prix 4000S II Latex TubeFortezza Senso All Weather
Full Review Full Review
Verdict Highly RecommendedNot Recommended
Rating 5 / 52 / 5
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  • Continental Grand Prix 4000S II Latex Tube
  • Vredestein Fortezza Senso All Weather
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)


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