CX/Gravel Tire Comparison:
Challenge Strada Bianca Pro HTLR 2021 vs
Continental Terra Speed TR (Protection) 40 2021

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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
  • Challenge Strada Bianca Pro HTLR *
  • Continental Terra Speed TR (Protection) 40 *
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)
Pro Members get 9-point radar charts

Manufacturer Specifications


Manufacturer Specifications
Brand ChallengeContinental
Model Strada Bianca Pro HTLRTerra Speed TR (Protection) 40
Year 20212021
Supplied By Bought in storeBought in store
Full Review Full ReviewFull Review
New or Used NewNew
Mileage 0 km0 km
Price Range Very HighHigh
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Manufacturer Part Number 005420101694
EAN 88556270054244019238027099
TPI 2603/180
Compound -Black Chili
Bead FoldingFolding
ETRTO 36-62240-622
Specified Weight 375 grams465 grams
Min Air Pressure 30 psi psi
Max Air Pressure 50 psi73 psi
Made In Members OnlyMembers Only
Available Sizes 30-622 (700x30c)
36-622 (700x36c)
40-622 (700x40c)
35-622 (700x35c)
40-622 (700x40c)
35-584 (650x35b)
40-584 (650x40b)
Image
Challenge Strada Bianca Pro HTLR 2021
Continental Terra Speed TR (Protection) 40 2021
Image
Challenge Strada Bianca Pro HTLR 2021
Continental Terra Speed TR (Protection) 40 2021
Image
Challenge Strada Bianca Pro HTLR 2021
Continental Terra Speed TR (Protection) 40 2021

Size and Weight Measurements


Size and Weight Measurements
Model Strada Bianca Pro HTLRTerra Speed TR (Protection) 40
Specified Weight 375 grams465 grams
Measured Weight 393 grams461 grams
Measured Width Casing 35 mm (un-round)38 mm (un-round)
Measured Width Tread 35 mm38 mm
Measured Height 31 mm (un-round)35 mm (un-round)
Measured Knob Height Center 0.2 mm1.2 mm
Measured Knob Height Edge 0.2 mm1.2 mm
Measured Total Thickness Sidewall Members OnlyMembers Only
Measured Casing Thickness Center 2.60 mm2.30 mm
All size measurements are taken at low air pressure on a 17.8 mm inner width rim.

Rolling Resistance Test Results


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Rolling Resistance Test Results
Model Strada Bianca Pro HTLRTerra Speed TR (Protection) 40
Spin Up Video YouTubeYouTube
Inner Tube Conti Cross28 (160 gr)Conti Cross28 (160 gr)
Measured Width 35 mm38 mm
Rolling Resistance
Real tire width in mm:
30-32 = 66 psi/4.6 bar
33-35 = 60 psi/4.1 bar
36-38 = 54 psi/3.7 bar
39-42 = 50 psi/3.4 bar
High Air Pressure
Members OnlyMembers Only
Rolling Resistance
Real tire width in mm:
30-32 = 55 psi/3.8 bar
33-35 = 50 psi/3.4 bar
36-38 = 45 psi/3.1 bar
39-42 = 42 psi/2.9 bar
Medium Air Pressure
Members OnlyMembers Only
Rolling Resistance
Real tire width in mm:
30-32 = 44 psi/3.0 bar
33-35 = 40 psi/2.8 bar
36-38 = 36 psi/2.6 bar
39-42 = 33 psi/2.3 bar
Low Air Pressure
19.5 Watts
CRR: 0.00585
(40 psi / 2.8 bar)
21.6 Watts
CRR: 0.00647
(36 psi / 2.6 bar)
Rolling Resistance
Real tire width in mm:
30-32 = 33 psi/2.3 bar
33-35 = 30 psi/2.1 bar
36-38 = 27 psi/1.9 bar
39-42 = 25 psi/1.7 bar
Extra Low Air Pressure
24.2 Watts
CRR: 0.00725
(30 psi / 2.1 bar)
25.6 Watts
CRR: 0.00767
(27 psi / 1.9 bar)
The CX/Gravel section is a multi tire size section, air pressures have been adjusted to the measured casing width.

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 Strada Bianca Pro HTLRTerra Speed TR (Protection) 40
Total Puncture Score Tread 45 Points42 Points
Total Puncture Score Sidewall Members OnlyMembers Only
Tread Puncture Force Sharp Needle Members OnlyMembers Only
Tread Puncture Force Blunt Needle Members OnlyMembers Only
Tread Total Tire Thickness 2.6 mm2.3 mm
Sidewall Puncture Force Sharp Needle Members OnlyMembers Only
Sidewall Puncture Force Blunt Needle Members OnlyMembers Only
Sidewall Total Tire Thickness Members OnlyMembers Only

Conclusion


Conclusion
Model Strada Bianca Pro HTLRTerra Speed TR (Protection) 40
Full Review Full ReviewFull Review
Verdict Highly RecommendedHighly Recommended
Rating 5.0 / 55.0 / 5
Buy At Ad Amazon.comAd Amazon.com
  • Challenge Strada Bianca Pro HTLR *
  • Continental Terra Speed TR (Protection) 40 *
Performance compared to all other CX/Gravel tires
(100% is fastest - lightest - highest - strongest)

Pro Members get 9-point radar charts


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