Road Bike Tire Comparison:
Bontrager R4 320 2016 vs
Pirelli P Zero Velo 4S 2017

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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
  • Bontrager R4 320
  • Pirelli P Zero Velo 4S
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Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)

Manufacturer Specifications


Manufacturer Specifications
Brand BontragerPirelli
Model R4 320P Zero Velo 4S
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
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Manufacturer Part Number
TPI 320127
Compound SmartNET Silica 4S
Bead FoldingFolding
ETRTO 25-62225-622
Size Inch 28"28"
Width mm 2525
Specified Weight 230 grams220 grams
Min Air Pressure 90 psi psi
Max Air Pressure 140 psi110 psi
Made In ThailandFrance
Available Sizes 25-622 (700x25C)23-622 (700x23C)
25-622 (700x25C)
28-622 (700x28C)
Image
Bontrager R4 320 2016
Pirelli P Zero Velo 4S 2017
Image
Bontrager R4 320 2016
Pirelli P Zero Velo 4S 2017
Image
Bontrager R4 320 2016
Pirelli P Zero Velo 4S 2017

Size and Weight Measurements


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Size and Weight Measurements (Bike Wheel: 622-17C, Pressure: 100 psi / 6.8 bar)
Model R4 320P Zero Velo 4S
Measured Weight 226 grams220 grams
System Adjusted Weight 326 grams
(tire + inner tube)
320 grams
(tire + inner tube)
Measured Width 25 mm27 mm
Measured Height 22 mm25 mm
Total Tire Thickness Center 2.2 mm2.9 mm
Total Tire Thickness Sidewall 0.8 mm0.65 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 320P Zero Velo 4S
Inner Tube Conti Race28 (100gr butyl)Conti Race28 (100gr butyl)
Rolling Resistance 140 psi Not TestedNot Tested
Rolling Resistance 120 psi 11.5 Watts14.7 Watts
Rolling Resistance 100 psi 12.2 Watts15.9 Watts
Rolling Resistance 80 psi 13.9 Watts17.6 Watts
Rolling Resistance 60 psi 16.4 Watts20.2 Watts
CRR 140 psi / 9.7 Bar Not TestedNot Tested
CRR 120 psi / 8.1 Bar 0.003450.00441
CRR 100 psi / 6.8 Bar 0.003660.00477
CRR 80 psi / 5.5 Bar 0.004170.00528
CRR 60 psi / 4.1 Bar 0.004920.00606
Spin Up Video YouTubeYouTube
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Puncture Resistance Test Results


Puncture Resistance Test Results (higher is better)
Model R4 320P Zero Velo 4S
Puncture Resistance Tread 10 Points13 Points
Puncture Resistance Sidewall 4 Points5 Points
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Conclusion


Conclusion
Model R4 320P Zero Velo 4S
Full Review Full ReviewFull Review
Verdict RecommendedHighly Recommended
Rating 4 / 55 / 5
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  • Bontrager R4 320
  • Pirelli P Zero Velo 4S
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)


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