Road Bike Tire Comparison:
Bontrager R4 320 2016 vs
Continental Grand Prix TT 2016

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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 BontragerContinental
Model R4 320Grand Prix TT
Year 20162016
Tire Type Tubetype (clincher)Tubetype (clincher)
Supplied By Bought in storeSupplied by Continental
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range Very HighHigh
Pricing Amazon.com
Part Number 0101077
TPI 3203/330
Compound Black Chili
Bead FoldingFolding
ETRTO 25-62225-622
Size Inch 28"28"
Width mm 2525
Specified Weight 230 grams190 grams
Min Air Pressure 90 psi95 psi
Max Air Pressure 140 psi120 psi
Made In ThailandGermany
Available Sizes 25-622 (700x25C)23-622 (700x23C)
25-622 (700x25C)
Image
Bontrager R4 320 2016
Continental Grand Prix TT 2016
Image
Bontrager R4 320 2016
Continental Grand Prix TT 2016
Image
Bontrager R4 320 2016
Continental Grand Prix TT 2016

Size and Weight Measurements


Size and Weight Measurements (Bike Wheel: 622-17C, Pressure: 100 psi / 6.8 bar)
Model R4 320Grand Prix TT
Measured Weight 226 grams195 grams
Measured Width 25 mm27 mm
Measured Height 22 mm24 mm
Total Tire Thickness Center 2.2 mm1.9 mm
Total Tire Thickness Sidewall 0.8 mm0.45 mm
Unmounted Casing Width No DataNo Data
Unmounted Tread Width No DataNo Data


Rolling Resistance Test Results


Rolling Resistance Test Results (Speed: 29 kmh / 18 mph, Load: 42.5 kg)
Model R4 320Grand Prix TT
Inner Tube Conti Race28 (100gr butyl)Conti Race28 (100gr butyl)
Rolling Resistance 140 psi Not TestedNot Tested
Rolling Resistance 120 psi 11.5 Watts9.9 Watts
Rolling Resistance 100 psi 12.2 Watts10.5 Watts
Rolling Resistance 80 psi 13.9 Watts11.8 Watts
Rolling Resistance 60 psi 16.4 Watts13.9 Watts
CRR 140 psi / 9.7 Bar Not TestedNot Tested
CRR 120 psi / 8.1 Bar 0.003450.00297
CRR 100 psi / 6.8 Bar 0.003660.00315
CRR 80 psi / 5.5 Bar 0.004170.00354
CRR 60 psi / 4.1 Bar 0.004920.00417
Spin Up Video YouTubeYouTube


Puncture Resistance Test Results


Puncture Resistance Test Results (higher is better)
Model R4 320Grand Prix TT
Puncture Resistance Tread 108
Puncture Resistance Side 44


Conclusion


Conclusion
Model R4 320Grand Prix TT
Full Review Full ReviewFull Review
Verdict RecommendedHighly Recommended
Rating 4 / 55 / 5
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