![]() ![]() Test Results Size, Weight, and Thickness MeasurementsĪll size measurements are taken at an air pressure of 100 psi / 6.9 bars on a 17.8 mm inner width rim.Ģ8-29 = 108 psi/7.4 barUltra High Air PressureĢ8-29 = 90 psi/6.2 barExtra High Air PressureĢ8-29 = 54 psi/3.7 barMedium Air Pressure Page to read in detail about how we test bicycle tires.ĭon't forget to take a look at the overview pages to make it easier to compare all bicycle tires that have been tested: The SC S is more expensive, but Challenge claims it provides a more supple ride than the Strada Pro.Īll rolling resistance tests are performed on our rolling resistance test machine. Challenge claims the natural rubber is more supple than synthetic rubber and grip is far superior as well.Īlongside the Strada Pro, Challenge also carries the Strada SC S which comes with a 320 TPI corespun cotton casing instead of the 300 TPI SuperPoly casing. ![]() The tread is manufactured at the Challenge factory in Thailand from locally-sourced natural rubber. The casing is specified as a folding 300 TPI SuperPoly (polyester) with an extra layer of PPS anti-puncture material under the tread. ![]() The Strada Pro is available with tan or black sidewalls, but surprisingly both colors are only available in a 25 mm wide version. I've decided to test the Strada Pro as it's their most widely available tire. I've received a lot of requests to test Challenge tires over the last two years as people are curious to how these perform on my tests. The Challenge Strada Pro is an all-round tire, and its main competitors are the Vittoria Open Corsa G+, Continental Grand Prix 4000S II, Schwalbe One, and Michelin Power Competition. The Strada Pro is a handmade open tubular (clincher) road bike tire from the small Italian manufacturer Challenge. ![]()
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