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

Manufacturer Specifications


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Manufacturer Specifications
Brand BontragerSchwalbe
Model R4 320Ironman Tubeless
Year 20162015
Tire Type Tubetype (clincher)Tubeless
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 11700028
EAN
TPI 320127
Compound OneStar
Bead FoldingFolding
ETRTO 25-62224-622
Size Inch 28"28"
Width mm 2524
Specified Weight 230 grams330 grams
Min Air Pressure 90 psi70 psi
Max Air Pressure 140 psi110 psi
Made In ThailandIndonesia
Available Sizes 25-622 (700x25C)22-622 (700x22C)
24-622 (700x24C)
Image
Bontrager R4 320 2016
Schwalbe Ironman Tubeless 2015
Image
Bontrager R4 320 2016
Schwalbe Ironman Tubeless 2015
Image
Bontrager R4 320 2016
Schwalbe Ironman Tubeless 2015

Size and Weight Measurements


Size and Weight Measurements (Bike Wheel: 622-17C, Pressure: 100 psi / 6.8 bar)
Model R4 320Ironman Tubeless
Specified Weight 230 grams330 grams
Measured Weight 226 grams336 grams
System Adjusted Weight 326 grams
(tire + inner tube)
356 grams
(tire + valve + rim seal)
Measured Width 25 mm25 mm
Measured Height 22 mm23 mm
Total Tire Thickness Center 2.2 mm3.2 mm
Total Tire Thickness Sidewall 0.8 mm1.2 mm
Unmounted Casing Width No DataNo Data
Unmounted Tread Width No DataNo Data

Rolling Resistance Test Results


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Rolling Resistance Test Results (Speed: 29 kmh / 18 mph, Load: 42.5 kg)
Model R4 320Ironman Tubeless
Inner Tube Conti Race28 (100gr butyl)None (0 ml sealant)
Spin Up Video YouTubeNo Video
Rolling Resistance
140 PSI / 9.7 Bar
Not TestedNot Tested
Rolling Resistance
120 PSI / 8.3 Bar
11.5 Watts
CRR: 0.00345
12.9 Watts
CRR: 0.00387
Rolling Resistance
100 PSI / 6.9 Bar
12.2 Watts
CRR: 0.00366
13.5 Watts
CRR: 0.00405
Rolling Resistance
80 PSI / 5.5 Bar
13.9 Watts
CRR: 0.00417
14.5 Watts
CRR: 0.00435
Rolling Resistance
60 PSI / 4.1 Bar
16.4 Watts
CRR: 0.00492
16.6 Watts
CRR: 0.00498
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 320Ironman Tubeless
Puncture Resistance Tread 10 Points13 Points
Puncture Resistance Sidewall 4 Points8 Points

Conclusion


Conclusion
Model R4 320Ironman Tubeless
Full Review Full ReviewFull Review
Verdict RecommendedRecommended
Rating 4 / 53 / 5
Buy At
  • Bontrager R4 320
  • Schwalbe Ironman Tubeless
Performance compared to all other road bike tires
(100% is fastest - lightest - thickest - strongest)
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