The Pandemic has left me with time to spend to do useless projects. With the tires I have laying around I decided to spend some that time to figure out which tire combination is the fasted. Over the course of a few rides I came up with the results.
No science involved here, just going downhill and keeping track of the downhill speeds when weather and road conditions seemed to be about same for each ride I measured.
The max speed was measured on a 3/4 mile downhill run with a max grade of 8% and no signals with minimal traffic on my ICE Sprint FS E8000 with 90% max pressure in tires.
Front tires and Back Tire
Schwalbe Marathon Racer and Schwalbe Supreme
40/406 - 340g 0.75 lbs
40/406 - 340g 0.75 lbs
42/599 - 440g 0.93 lbs
Total 1,120g 2.43lbs
Speed Average: 38.6 mph
Speeds: 40.8, 38.1, 38.5, 38.5, 38.1, 39.4
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Continental Contact (E25) and Schwalbe Supreme
37/406 - 420g 0.93 lbs
37/406 - 420g 0.93 lbs
42/559 - 440g 0.97 lbs
Total 1,280g 2.83 lbs
Speed Average: 38.2 mph
Speeds: 36.5, 38.2, 39.4, 38.7, 37.8, 38.0
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Schwalbe Plus and Schwalbe Plus
35/406 - 560g 1.23 lbs
35/406 - 560g 1.23 lbs
40/599 - 870g 1.90 lbs
Total 1,990g 4.36 lbs
Speed Average: 36.6 mph
Speeds: 37.1, 35.8, 36.8, 36.5, 37.8
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Now it's time to figure out something else to do with my time besides riding my trike, working on my trike, making stuff, drawing, reading and watching birds in my garden with my beautiful wife Carrie. Hopefully in the near future I'll be able to pack my trike in the car and start traveling again with Carrie, go out to dinner, visit family and friends and whatever.