Originally Posted by
elcruxio
The finding of 37mm marathon's being lowest rolling resistance is an interesting one. [..In] my mind marathons at least are slower than the test numbers would indicate. I'm fairly sure the winter hasn't been tested and I'm not sure about the marathon plus.
Marathon green guard has lower rolling and puncture resistance. The Plus is slightly more puncture resistant. The Plus Tour even more. But the more puncture resistant, the more rolling resistance. Choice depends on preferences.
For me, the more interesting bit is the relationship between pressure and rolling resistance. I used to keep mine at 40 psi (too lazy to pump at 50+
. I've ordered an electric pump