Road Bike Tire Comparison:
Bontrager R4 320 2016 vs
Challenge Strada Pro 2017

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Contents

  1. Manufacturer Specifications
  2. Size and Weight Measurements
  3. Rolling Resistance Test Results
  4. Puncture Resistance Test Results
  5. Conclusion

Manufacturer Specifications


Manufacturer Specifications
Brand BontragerChallenge
Model R4 320Strada Pro
Year 20162017
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 Very HighHigh
Pricing Amazon.com
Manufacturer Part Number
TPI 320300
Compound
Bead FoldingFolding
ETRTO 25-62225-622
Size Inch 28"28"
Width mm 2525
Specified Weight 230 grams240 grams
Min Air Pressure 90 psi100 psi
Max Air Pressure 140 psi145 psi
Made In ThailandThailand
Available Sizes 25-622 (700x25C)25-622 (700x25C)
Image
Bontrager R4 320 2016
Challenge Strada Pro 2017
Image
Bontrager R4 320 2016
Challenge Strada Pro 2017
Image
Bontrager R4 320 2016
Challenge Strada Pro 2017

Size and Weight Measurements


Size and Weight Measurements (Bike Wheel: 622-17C, Pressure: 100 psi / 6.8 bar)
Model R4 320Strada Pro
Measured Weight 226 grams254 grams
Measured Width 25 mm27 mm
Measured Height 22 mm24 mm
Total Tire Thickness Center 2.2 mm2.3 mm
Total Tire Thickness Sidewall 0.8 mm1 mm
Unmounted Casing Width No DataNo Data
Unmounted Tread Width No DataNo Data
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Rolling Resistance Test Results


Rolling Resistance Test Results (Speed: 29 kmh / 18 mph, Load: 42.5 kg)
Model R4 320Strada Pro
Inner Tube Conti Race28 (100gr butyl)Conti Race28 (100gr butyl)
Rolling Resistance 140 psi Not TestedNot Tested
Rolling Resistance 120 psi 11.5 Watts13.4 Watts
Rolling Resistance 100 psi 12.2 Watts14.0 Watts
Rolling Resistance 80 psi 13.9 Watts15.3 Watts
Rolling Resistance 60 psi 16.4 Watts17.9 Watts
CRR 140 psi / 9.7 Bar Not TestedNot Tested
CRR 120 psi / 8.1 Bar 0.003450.00402
CRR 100 psi / 6.8 Bar 0.003660.00420
CRR 80 psi / 5.5 Bar 0.004170.00459
CRR 60 psi / 4.1 Bar 0.004920.00537
Spin Up Video YouTubeYouTube
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Puncture Resistance Test Results


Puncture Resistance Test Results (higher is better)
Model R4 320Strada Pro
Puncture Resistance Tread 10 Points11 Points
Puncture Resistance Side 4 Points3 Points
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Conclusion


Conclusion
Model R4 320Strada Pro
Full Review Full ReviewFull Review
Verdict RecommendedRecommended
Rating 4 / 53 / 5
Pricing Amazon.com

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