Tire Test - Continental E.Contact

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Continental E.Contact Touring/E-Bike tire on a rolling resistance test machine

According to Continental, the E.Contact is a tire designed for large e-bikes or rental bikes. They claim this tire to have the highest puncture and cut protection while still providing a low rolling resistance thanks to its double layer of puncture resistance material. The E.Contact comes with the ECO 50 logo and the ECE-R75 certification which makes it suitable for high-speed e-bikes up to 50 km/h.


Check Continental E.Contact Prices at Amazon.com


To achieve the highest puncture protection, Continental uses both a thick but soft layer of puncture resistance material together with a SafetyPlus Breaker which is a layer which is harder to penetrate, but much thinner. When examining the E.Contact, I immediately noticed this to be a very stiff tire. On top of that, the rubber compound itself also appears to be of a very hard kind. I definitely believe this tire to be hard to puncture, but is rolling resistance still acceptable?


Manufacturer Specs
Brand Continental
Model E.Contact
Year 2015
Supplied By Supplied by Continental
New or Used New
Mileage 0 km
Price Range Med
Price Amazon.com
Part Number 0100687
TPI 3/180
Compound
Bead Wire
ETRTO 37-622
Size Inch 28"
Width mm 37.00
Specified Weight 800 grams
Max Pressure 87
Made In India
Available Sizes 47-622 (28x1.75)
42-622 (28x1.60)
37-622 (28x1.40)
47-559 (26x1.75)

Test Results


Continental E.Contact Touring/E-Bike on a rolling resistance test machine

Size and Weight Measurements


Size and Weight Measurements (Bike Wheel: 622-17C, Pressure: 60 psi / 4 bar)
Specified Weight 800 grams
Measured Weight 840 grams
Measured Width 35 mm
Measured Height 35 mm
Tread Depth 2.0 mm
Total Tire Thickness Center 6.6 mm
Total Tire Thickness Sidewall 1.85 mm

Rolling Resistance Test Results


Rolling Resistance Test Results (Speed: 29 kmh / 18 mph, Load: 42.5 kg)
Inner Tube Conti Tour 28 (170 gr butyl)
Rolling Resistance 90 psi / 6 Bar 27.7 Watts
Rolling Resistance 75 psi / 5 Bar 29.6 Watts
Rolling Resistance 60 psi / 4 Bar 33.4 Watts
Rolling Resistance 45 psi / 3 Bar 39.4 Watts
Rolling Resistance 30 psi / 2 Bar 51.1 Watts
Rolling Resistance Coefficient (Crr) 90 psi / 6 Bar 0.00830
Rolling Resistance Coefficient (Crr) 75 psi / 5 Bar 0.00887
Rolling Resistance Coefficient (Crr) 60 psi / 4 Bar 0.01001
Rolling Resistance Coefficient (Crr) 45 psi / 3 Bar 0.01181
Rolling Resistance Coefficient (Crr) 30 psi / 2 Bar 0.01532


Puncture Resistance Test Results


Puncture Resistance Test Result (higher is better)
Puncture Resistance Tread 16
Puncture Resistance Sidewall 8
Puncture Factor Tread * 106
Puncture Factor Sidewall * 15
* Puncture Factor = Puncture Resistance * Total Tire Thickness
Puncture Factor provides a more realistic puncture resistance score for touring tires



Conclusion


Continental E.Contact Touring/E-Bike on a rolling resistance test machine

Puncture resistance is good, but rolling resistance is very high. Continental's claim of offering the highest puncture resistance while still rolling easy isn't true. I really like Conti's road bike and mountain bike tires, but can't recommend using their touring bike tires as they don't impress. Using the E.Contact on rental bikes might be a good choice as I'm sure the hard compound and strong sidewalls will last for ages.


It gets boring, but just getting a pair of Schwalbe Marathon (read review) or Marathon Plus (read review) seems to be the easy choice in the tour/e-bike category. Those tires provide a good puncture resistance and a much lower rolling resistance.


Check Continental E.Contact Prices at Amazon.com


RATING: 2 / 5
VERDICT:
Not Recommended


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Images


Continental E.Contact Touring/E-Bike tire on a rolling resistance test machine
Continental E.Contact Touring/E-Bike tire on a rolling resistance test machine
Continental E.Contact Touring/E-Bike tire on a rolling resistance test machine

(click to enlarge)

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