Road Bike Tire Comparison:
Bontrager R4 320 2016 vs
Continental Ultra Sport II 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
  • Bontrager R4 320
  • Continental Ultra Sport II
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)

Manufacturer Specifications


Manufacturer Specifications
Brand BontragerContinental
Model R4 320Ultra Sport II
Year 20162015
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 HighLow
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Manufacturer Part Number 0150011
TPI 3203/180
Compound PureGrip
Bead FoldingFolding
ETRTO 25-62225-622
Size Inch 28"28"
Width mm 2525
Specified Weight 230 grams260 grams
Min Air Pressure 90 psi95 psi
Max Air Pressure 140 psi120 psi
Made In ThailandChina
Available Sizes 25-622 (700x25C)32-630 (27x1 1/4)
28-630 (27x1 1/8)
23-622 (700x23C)
25-622 (700x25C)
28-622 (700x28C)
32-622 (700x32C)
Image
Bontrager R4 320 2016
Continental Ultra Sport II 2015
Image
Bontrager R4 320 2016
Continental Ultra Sport II 2015
Image
Bontrager R4 320 2016
Continental Ultra Sport II 2015

Size and Weight Measurements


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Size and Weight Measurements (Bike Wheel: 622-17C, Pressure: 100 psi / 6.8 bar)
Model R4 320Ultra Sport II
Measured Weight 226 grams267 grams
System Adjusted Weight 326 grams
(tire + inner tube)
367 grams
(tire + inner tube)
Measured Width 25 mm26 mm
Measured Height 22 mm24 mm
Total Tire Thickness Center 2.2 mm3 mm
Total Tire Thickness Sidewall 0.8 mm0.7 mm
Unmounted Casing Width No DataNo Data
Unmounted Tread Width No DataNo Data
Loading Chart...

Rolling Resistance Test Results


Rolling Resistance Test Results (Speed: 29 kmh / 18 mph, Load: 42.5 kg)
Model R4 320Ultra Sport II
Inner Tube Conti Race28 (100gr butyl)Conti Race28 (100gr butyl)
Rolling Resistance 140 psi Not TestedNot Tested
Rolling Resistance 120 psi 11.5 Watts14.3 Watts
Rolling Resistance 100 psi 12.2 Watts14.8 Watts
Rolling Resistance 80 psi 13.9 Watts16.4 Watts
Rolling Resistance 60 psi 16.4 Watts18.9 Watts
CRR 140 psi / 9.7 Bar Not TestedNot Tested
CRR 120 psi / 8.1 Bar 0.003450.00429
CRR 100 psi / 6.8 Bar 0.003660.00444
CRR 80 psi / 5.5 Bar 0.004170.00492
CRR 60 psi / 4.1 Bar 0.004920.00567
Spin Up Video YouTubeNo Video
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Puncture Resistance Test Results


Puncture Resistance Test Results (higher is better)
Model R4 320Ultra Sport II
Puncture Resistance Tread 10 Points10 Points
Puncture Resistance Sidewall 4 Points4 Points
Loading Chart...

Conclusion


Conclusion
Model R4 320Ultra Sport II
Full Review Full ReviewFull Review
Verdict RecommendedRecommended
Rating 4 / 53 / 5
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  • Bontrager R4 320
  • Continental Ultra Sport II
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)


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