Road Bike Tire Comparison:
Continental Grand Prix 4 Season 2015 vs
Continental Ultra Sport III 2020

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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 4 Season
  • Continental Ultra Sport III
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)

Manufacturer Specifications


Manufacturer Specifications
Brand ContinentalContinental
Model Grand Prix 4 SeasonUltra Sport III
Year 20152020
Tire Type Tubetype (clincher)Tubetype (clincher)
Supplied By Bought in storeBought in store
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range HighLow
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Manufacturer Part Number 01001750150457
EAN 4019238026849
TPI 3/3303/180
Compound Max Grip SilicaPureGrip
Bead FoldingFolding
ETRTO 25-62225-622
Size Inch 28"28"
Width mm 2525
Specified Weight 240 grams270 grams
Min Air Pressure 95 psi95 psi
Max Air Pressure 120 psi123 psi
Made In GermanyChina
Available Sizes 23-622 (700x23C)
25-622 (700x25C)
28-622 (700x28C)
32-622 (700x32C)
23-622 (700x23c)
25-622 (700x25c)
28-622 (700x28c)
32-622 (700x32c)
25-584 (650x25B)
28-584 (650x28B)
Image
Continental Grand Prix 4 Season 2015
Continental Ultra Sport III 2020
Image
Continental Grand Prix 4 Season 2015
Continental Ultra Sport III 2020
Image
Continental Grand Prix 4 Season 2015
Continental Ultra Sport III 2020

Size and Weight Measurements


Size and Weight Measurements
Model Grand Prix 4 SeasonUltra Sport III
Specified Weight 240 grams270 grams
Measured Weight 215 grams267 grams
System Adjusted Weight 315 grams
(tire + inner tube)
367 grams
(tire + inner tube)
Measured Width 27 mm26 mm
Measured Height 24 mm24 mm
Total Tire Thickness Center 2.7 mm3 mm
Total Tire Thickness Sidewall 0.7 mm0.7 mm
Unmounted Casing Width No Data64 mm
Unmounted Tread Width No Data27 mm
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 4 SeasonUltra Sport III
Inner Tube Conti Race28 (100gr butyl)Conti Race28 (100gr butyl)
Spin Up Video No VideoYouTube
Rolling Resistance
140 PSI / 9.7 Bar
Not TestedNot Tested
Rolling Resistance
120 PSI / 8.3 Bar
17.2 Watts
CRR: 0.00516
14.1 Watts
CRR: 0.00423
Rolling Resistance
100 PSI / 6.9 Bar
18.1 Watts
CRR: 0.00543
14.7 Watts
CRR: 0.00441
Rolling Resistance
80 PSI / 5.5 Bar
19.8 Watts
CRR: 0.00594
16.6 Watts
CRR: 0.00498
Rolling Resistance
60 PSI / 4.1 Bar
22.5 Watts
CRR: 0.00674
19.4 Watts
CRR: 0.00582
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 4 SeasonUltra Sport III
Puncture Resistance Tread 17 Points10 Points
Puncture Resistance Sidewall 7 Points4 Points

Conclusion


Conclusion
Model Grand Prix 4 SeasonUltra Sport III
Full Review Full ReviewFull Review
Verdict RecommendedRecommended
Rating 4 / 53 / 5
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  • Continental Grand Prix 4 Season
  • Continental Ultra Sport III
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)


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