CX/Gravel Tire Comparison:
Challenge Gravel Grinder 33 2020 vs
Continental Terra Speed TR 35 2020
Contents and Test Summary
- Manufacturer Specifications
- Size and Weight Measurements
- Rolling Resistance Test Results
- Puncture Resistance Test Results
- Static Grip Test Results
- Conclusion
- Challenge Gravel Grinder 33
- Continental Terra Speed TR 35
Performance compared to all other CX/Gravel tires
(100% is best)
(100% is best)
Pro Members get 11-point radar charts
Manufacturer Specifications
Manufacturer Specifications | ||
---|---|---|
Brand | Challenge | Continental |
Model | Gravel Grinder 33 | Terra Speed TR 35 |
Year | 2020 | 2020 |
Supplied By | Bought in store | Bought in store |
Full Review | Full Review | Full Review |
New or Used | New | New |
Mileage | 0 km | 0 km |
Price Range | High | High |
Buy At | Ad Amazon.com | Ad Amazon.com |
Manufacturer Part Number | 00535 | 0101693 |
EAN | 8855627005356 | 4019238027013 |
TPI | 260 | 3/180 |
Compound | Black Chili | |
Bead | Folding | Folding |
ETRTO | 33-622 | 35-622 |
Specified Weight | 0 grams | 360 grams |
Min Air Pressure | 35 psi | 44 psi |
Max Air Pressure | 75 psi | 73 psi |
Made In | Members Only | Members Only |
Available Sizes | 33-622 (700x33x) 36-622 (700x36c) | 35-622 (700x35c) 40-622 (700x40c) 45-622 (700x45c) 35-584 (650x35b) 40-584 (650x40b) |
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Image 4 | Not Available | Not Available |
Size and Weight Measurements
Size and Weight Measurements | ||
---|---|---|
Model | Gravel Grinder 33 | Terra Speed TR 35 |
Specified Weight | 0 grams | 360 grams |
Measured Weight | 412 grams | 378 grams |
Measured Width Casing | 33 mm (un-round) | 33 mm (un-round) |
Measured Width Tread | 33 mm | 33 mm |
Measured Height | 31 mm (un-round) | 31 mm (un-round) |
Measured Knob Height Center | 0.7 mm | 1.1 mm |
Measured Knob Height Edge | 2.3 mm | 1.2 mm |
Measured Casing Thickness Center | 2.60 mm | 1.90 mm |
Measured Total Thickness Sidewall | Members Only | Members Only |
All size measurements are taken at low air pressure on a 17.8 mm inner width rim. |
Rolling Resistance Test Results
Rolling Resistance Test Results | ||
---|---|---|
Model | Gravel Grinder 33 | Terra Speed TR 35 |
Spin Up Video | YouTube | YouTube |
Inner Tube | Conti Cross28 (160 gr) | None (30 ml sealant) |
Measured Width | 33 mm | 33 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 43-46 = 46 psi/3.2 bar 47-50 = 42 psi/2.9 barHigh Air Pressure |
Members Only | Members 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 43-46 = 38 psi/2.6 bar 47-50 = 35 psi/2.4 barMedium Air Pressure |
Members Only | Members 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 43-46 = 31 psi/2.1 bar 47-50 = 28 psi/1.9 barLow Air Pressure |
28.7 Watts CRR: 0.00860 (40 psi / 2.8 bar) | 17.0 Watts CRR: 0.00510 (40 psi / 2.8 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 43-46 = 23 psi/1.6 bar 47-50 = 21 psi/1.4 barExtra Low Air Pressure |
33.9 Watts CRR: 0.01016 (30 psi / 2.1 bar) | 20.3 Watts CRR: 0.00609 (30 psi / 2.1 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 | Gravel Grinder 33 | Terra Speed TR 35 |
Total Puncture Score Tread | 62 Points | 32 Points |
Total Puncture Score Sidewall | Members Only | Members Only |
Tread Puncture Force Sharp Needle | Members Only | Members Only |
Tread Puncture Force Blunt Needle | Members Only | Members Only |
Tread Total Tire Thickness | 2.6 mm | 1.9 mm |
Sidewall Puncture Force Sharp Needle | Members Only | Members Only |
Sidewall Puncture Force Blunt Needle | Members Only | Members Only |
Sidewall Total Tire Thickness | Members Only | Members Only |
Static Grip Test Results
Static Grip Test Results (higher is better) | ||
---|---|---|
Model | Gravel Grinder 33 | Terra Speed TR 35 |
Wet Grip Average | 53 Points | 58 Points |
Wet Grip Center | Members Only | Members Only |
Wet Grip Edge | Members Only | Members Only |
Measured Knob Height Center | 0.7 mm | 1.1 mm |
Measured Knob Height Edge | 2.3 mm | 1.2 mm |
Grip in points = coefficient of friction * 100 CX/Gravel grip test rim width = 23.0 mm |
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Wet Grip Test and Off-Road Tires (info) | ||
Conclusion
Conclusion | ||
---|---|---|
Model | Gravel Grinder 33 | Terra Speed TR 35 |
Full Review | Full Review | Full Review |
Verdict | Recommended | Highly Recommended |
Rating | 3.5 / 5 | 5.0 / 5 |
Buy At | Ad Amazon.com | Ad Amazon.com |
- Challenge Gravel Grinder 33
- Continental Terra Speed TR 35
(100% is fastest - lightest - highest - strongest)
Pro Members get 11-point radar charts