Road Bike Tire Comparison:
Challenge Strada Pro 2017 vs
Vittoria Zaffiro Slick 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
  • Challenge Strada Pro
  • Vittoria Zaffiro Slick
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)

Manufacturer Specifications


Manufacturer Specifications
Brand ChallengeVittoria
Model Strada ProZaffiro Slick
Year 20172015
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 111.3ZS.23.25.111TG
EAN
TPI 30026
Compound
Bead FoldingWire
ETRTO 25-62225-622
Size Inch 28"28"
Width mm 2525
Specified Weight 240 grams370 grams
Min Air Pressure 100 psi100 psi
Max Air Pressure 145 psi130 psi
Made In ThailandThailand
Available Sizes 25-622 (700x25C)23-622 (700x23C)
25-622 (700x25C)
28-622 (700x28C)
32-622 (700x32C)
Image
Challenge Strada Pro 2017
Vittoria Zaffiro Slick 2015
Image
Challenge Strada Pro 2017
Vittoria Zaffiro Slick 2015
Image
Challenge Strada Pro 2017
Vittoria Zaffiro Slick 2015

Size and Weight Measurements


Size and Weight Measurements
Model Strada ProZaffiro Slick
Specified Weight 240 grams370 grams
Measured Weight 254 grams398 grams
System Adjusted Weight 354 grams
(tire + inner tube)
498 grams
(tire + inner tube)
Measured Width 27 mm26 mm
Measured Height 24 mm24 mm
Total Tire Thickness Center 2.3 mm3.6 mm
Total Tire Thickness Sidewall 1 mm0.85 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 Strada ProZaffiro Slick
Inner Tube Conti Race28 (100gr butyl)Conti Race28 (100gr butyl)
Spin Up Video YouTubeNo Video
Rolling Resistance
140 PSI / 9.7 Bar
Not TestedNot Tested
Rolling Resistance
120 PSI / 8.3 Bar
13.4 Watts
CRR: 0.00402
15.7 Watts
CRR: 0.00471
Rolling Resistance
100 PSI / 6.9 Bar
14.0 Watts
CRR: 0.00420
17.1 Watts
CRR: 0.00513
Rolling Resistance
80 PSI / 5.5 Bar
15.3 Watts
CRR: 0.00459
20.1 Watts
CRR: 0.00603
Rolling Resistance
60 PSI / 4.1 Bar
17.9 Watts
CRR: 0.00537
24.4 Watts
CRR: 0.00731
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 Strada ProZaffiro Slick
Puncture Resistance Tread 11 Points10 Points
Puncture Resistance Sidewall 3 Points4 Points

Conclusion


Conclusion
Model Strada ProZaffiro Slick
Full Review Full ReviewFull Review
Verdict RecommendedNot Recommended
Rating 3 / 52 / 5
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  • Challenge Strada Pro
  • Vittoria Zaffiro Slick
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)


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