Road Bike Tire Comparison:
Bontrager R4 320 2016 vs
Vittoria Corsa G+ (tubular) 2016

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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
  • Vittoria Corsa G+ (tubular)
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)

Manufacturer Specifications


Manufacturer Specifications
Brand BontragerVittoria
Model R4 320Corsa G+ (tubular)
Year 20162016
Tire Type Tubetype (clincher)Tubular
Supplied By Bought in storeBought in store
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range Very HighVery High
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Manufacturer Part Number 111.1CX.00.25.411TG
EAN
TPI 320320
Compound 4C G+ Isotech
Bead FoldingTubular
ETRTO 25-62228x25
Size Inch 28"28"
Width mm 2525
Specified Weight 230 grams280 grams
Min Air Pressure 90 psi100 psi
Max Air Pressure 140 psi175 psi
Made In Thailand-
Available Sizes 25-622 (700x25C)28x23
28x25
28x28
Image
Bontrager R4 320 2016
Vittoria Corsa G+ (tubular) 2016
Image
Bontrager R4 320 2016
Vittoria Corsa G+ (tubular) 2016
Image
Bontrager R4 320 2016
Vittoria Corsa G+ (tubular) 2016

Size and Weight Measurements


Size and Weight Measurements (Bike Wheel: 622-17C, Pressure: 100 psi / 6.8 bar)
Model R4 320Corsa G+ (tubular)
Specified Weight 230 grams280 grams
Measured Weight 226 grams281 grams
System Adjusted Weight 326 grams
(tire + inner tube)
291 grams
(tire + tubular glue)
Measured Width 25 mm25 mm
Measured Height 22 mm23 mm
Total Tire Thickness Center 2.2 mm2.3 mm
Total Tire Thickness Sidewall 0.8 mm0.65 mm
Unmounted Casing Width No DataNo Data
Unmounted Tread Width No Data30 mm

Rolling Resistance Test Results


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Rolling Resistance Test Results (Speed: 29 kmh / 18 mph, Load: 42.5 kg)
Model R4 320Corsa G+ (tubular)
Inner Tube Conti Race28 (100gr butyl)Tubular
Spin Up Video YouTubeYouTube
Rolling Resistance
140 PSI / 9.7 Bar
Not Tested11.9 Watts
CRR: 0.00357
Rolling Resistance
120 PSI / 8.3 Bar
11.5 Watts
CRR: 0.00345
12.3 Watts
CRR: 0.00369
Rolling Resistance
100 PSI / 6.9 Bar
12.2 Watts
CRR: 0.00366
12.8 Watts
CRR: 0.00384
Rolling Resistance
80 PSI / 5.5 Bar
13.9 Watts
CRR: 0.00417
14.1 Watts
CRR: 0.00423
Rolling Resistance
60 PSI / 4.1 Bar
16.4 Watts
CRR: 0.00492
16.4 Watts
CRR: 0.00492
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 320Corsa G+ (tubular)
Puncture Resistance Tread 10 Points11 Points
Puncture Resistance Sidewall 4 Points3 Points

Conclusion


Conclusion
Model R4 320Corsa G+ (tubular)
Full Review Full ReviewFull Review
Verdict RecommendedHighly Recommended
Rating 4 / 55 / 5
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  • Bontrager R4 320
  • Vittoria Corsa G+ (tubular)
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)


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