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

Facebook like buttonTwitter like buttonEmail share button

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
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
Buy At Ad Amazon.com
Manufacturer Part Number
EAN
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


Size and Weight Measurements
Model R4 320P Zero Velo 4S
Specified Weight 230 grams220 grams
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
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


advertisement
Rolling Resistance Test Results
Model R4 320P Zero Velo 4S
Inner Tube Conti Race28 (100gr butyl)Conti Race28 (100gr butyl)
Spin Up Video YouTubeYouTube
Rolling Resistance
140 PSI / 9.7 Bar
Not TestedNot Tested
Rolling Resistance
120 PSI / 8.3 Bar
11.5 Watts
CRR: 0.00345
14.7 Watts
CRR: 0.00441
Rolling Resistance
100 PSI / 6.9 Bar
12.2 Watts
CRR: 0.00366
15.9 Watts
CRR: 0.00477
Rolling Resistance
80 PSI / 5.5 Bar
13.9 Watts
CRR: 0.00417
17.6 Watts
CRR: 0.00528
Rolling Resistance
60 PSI / 4.1 Bar
16.4 Watts
CRR: 0.00492
20.2 Watts
CRR: 0.00606
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 R4 320P Zero Velo 4S
Puncture Resistance Tread 10 Points13 Points
Puncture Resistance Sidewall 4 Points5 Points

Conclusion


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


Get updates on new articles