Originally Posted by
chas58
Speed:
You are talking maybe a 50% increase in rolling resistance, max. Something like 10-20 watts for two tires with 120 watt input power, so that could be well over 10%. Schwalbe does tend to make very efficient tires (even with knobs).
Handling:
With knobbies, I notice that my cornering on the street (at say 20+ mph) is a lot more cautious because the knobbies don't grip the road like a slick.
Stick with the schwalbe's if you like. The G-one isn't going to hold you back much on the road and can be a good complement to the X-one , and of course you could go with their slick version...
Originally Posted by
HardyWeinberg
My winter ride uses 35mm marathon extremes, which I don't think they make anymore but are
pictured here next to a marathon supreme. I don't feel like they are the limiting factor in my slower winter rides. More the heavier panniers and erring toward over rather than under dressing. If I were aiming to commute closer to 20mph I might not want them but I can't commute closer to 20mph and avoid road hazards etc...
I've just ordered a pair of Schwalbe Marathon Supremes (700x35). I was weighing up these vs Vittoria Hypers and there was a general trend towards people thinking to Supremes had better grip in the wet, but that both had very good (low) rolling resistance.
I'm hoping that these tyres will also be OK on dry gravel or dirt trails.
If I ever actually get into cyclocross, or find myself on a ride that is predominantly grass or mud, then I will change to the original Schwalbe X-One knobblies. My guess is that this would be < 5-10% of my current riding, so I'll just change tyres instead of buying a whole new set of wheels ($$$ with hubs, disc rotors, new cassette...).
Thanks for the suggestions!
John