Road Bike Tire Comparison:
Bontrager R4 320 2016 vs
Continental Grand Prix 4000 RS 2018

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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 Grand Prix 4000 RS
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)

Manufacturer Specifications


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Manufacturer Specifications
Brand BontragerContinental
Model R4 320Grand Prix 4000 RS
Year 20162018
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
Manufacturer Part Number 0101667
EAN
TPI 3203/330
Compound Black Chili
Bead FoldingFolding
ETRTO 25-62225-622
Size Inch 28"28"
Width mm 2525
Specified Weight 230 grams205 grams
Min Air Pressure 90 psi psi
Max Air Pressure 140 psi120 psi
Made In ThailandGermany
Available Sizes 25-622 (700x25C)25-622 (700x25c)
Image
Bontrager R4 320 2016
Continental Grand Prix 4000 RS 2018
Image
Bontrager R4 320 2016
Continental Grand Prix 4000 RS 2018
Image
Bontrager R4 320 2016
Continental Grand Prix 4000 RS 2018

Size and Weight Measurements


Size and Weight Measurements
Model R4 320Grand Prix 4000 RS
Specified Weight 230 grams205 grams
Measured Weight 226 grams205 grams
System Adjusted Weight 326 grams
(tire + inner tube)
305 grams
(tire + inner tube)
Measured Width 25 mm27 mm
Measured Height 22 mm24 mm
Total Tire Thickness Center 2.2 mm2.3 mm
Total Tire Thickness Sidewall 0.8 mm0.55 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


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Rolling Resistance Test Results
Model R4 320Grand Prix 4000 RS
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
10.5 Watts
CRR: 0.00315
Rolling Resistance
100 PSI / 6.9 Bar
12.2 Watts
CRR: 0.00366
11.0 Watts
CRR: 0.00330
Rolling Resistance
80 PSI / 5.5 Bar
13.9 Watts
CRR: 0.00417
12.3 Watts
CRR: 0.00369
Rolling Resistance
60 PSI / 4.1 Bar
16.4 Watts
CRR: 0.00492
14.4 Watts
CRR: 0.00432
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 320Grand Prix 4000 RS
Puncture Resistance Tread 10 Points9 Points
Puncture Resistance Sidewall 4 Points4 Points

Conclusion


Conclusion
Model R4 320Grand Prix 4000 RS
Full Review Full ReviewFull Review
Verdict RecommendedHighly Recommended
Rating 4 / 55 / 5
Buy At
  • Bontrager R4 320
  • Continental Grand Prix 4000 RS
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)
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